Every year, the same conversation happens in kitchens across the country. Someone — usually the person who has agreed to host Thanksgiving — looks at a twenty-pound turkey and the four hours it requires in the oven and wonders, not for the first time, whether there is a better way. There is.
A bone-in turkey breast in the slow cooker, rubbed all over with an herb butter made from softened butter, garlic, fresh rosemary, thyme, and sage, cooks in six to eight hours on LOW while you do other things. The result is turkey breast that is more reliably moist than anything that has come out of an oven at high heat — the slow cooker’s enclosed, steam-rich environment prevents the white meat from drying out in the way that convection oven heat so reliably does to turkey breast if the timing is even slightly off.
The herb butter is the other half of the equation. It gets worked under the skin directly onto the meat before cooking, basting the breast from the inside as the butter melts during the long cook. And the drippings it produces — butter, turkey fat, herb-infused juice — are extraordinary. Strained and either reduced into a pan sauce or enriched into a gravy, they are reason enough to make this recipe.
This is the recipe for Thanksgiving for a smaller crowd, for a Sunday roast that wants to be special, for anyone who loves the flavor of roast turkey but does not want to commit to the full bird. It is also, quietly, one of the most useful things you can cook in a slow cooker.
The Case for Turkey Breast Over Whole Turkey
The whole turkey is a magnificent thing — visually dramatic, symbolically significant, and genuinely delicious when executed properly. It is also a significant undertaking: days of thawing, brining, trussing, basting, resting, carving, and the perpetual anxiety about whether the breast is drying out while the thighs are still catching up.
Turkey breast solves the most common problem with whole turkey cooking: the white meat and dark meat do not finish at the same time, and keeping the breast moist while waiting for the thighs means one or the other is compromised.
A turkey breast eliminates that entirely. There is only one type of meat. It all reaches temperature at the same time. It fits in a slow cooker without any contortion. It serves four to eight people depending on the size. And leftover turkey breast, sliced and stored in its own juices, stays moist and flavorful for days in the refrigerator — producing sandwiches, salads, and soup ingredients that are considerably better than what you get from drying out the breast of a whole turkey in the oven.
For Thanksgiving for two, four, or six, a slow cooker turkey breast is not a compromise. It is the better option.
Choosing Your Turkey Breast
Turkey breasts come in several forms and the choice matters.
Bone-in, skin-on turkey breast is the best choice for this recipe and the one the recipe is written for. The bone conducts heat to the interior of the meat, contributing to even, gentle cooking. The skin protects the meat from drying out and, critically, creates a layer between the herb butter and the hot cooking environment that keeps the butter in contact with the meat throughout the cooking time. The drippings from a bone-in, skin-on breast are significantly more flavorful than those from a boneless one.
Boneless turkey breast works and is more convenient but produces a leaner, drier result. If using boneless, add an extra tablespoon of butter to the herb butter mixture, and consider wrapping the breast in bacon or pancetta before it goes into the slow cooker to protect the exterior and add fat.
Size. A typical bone-in turkey breast weighs between 4 and 7 pounds. A 4 to 5 pound breast fits most 6-quart slow cookers comfortably and serves 4 to 6 people. A 6 to 7 pound breast may require a larger 7 or 8-quart slow cooker. Measure your slow cooker before purchasing — the breast needs to fit with the lid sitting flat.
Fresh vs frozen. Fresh turkey breast is ideal. If using frozen, thaw completely in the refrigerator — allow 24 hours per 5 pounds. Never cook a partially frozen turkey breast in the slow cooker.
The Herb Butter
The herb butter is the flavor engine of this recipe. Made from softened butter, garlic, fresh herbs, lemon zest, and seasoning, it is applied in three places: under the skin directly onto the meat, over the skin, and on the vegetable trivet beneath the breast. Applied in all three locations, it flavors the turkey from every direction and produces drippings that taste extraordinary.
Use softened — not melted — butter. Softened butter has the right consistency to be pushed under the skin without tearing it. Melted butter simply runs off and pools at the bottom of the slow cooker without flavoring the meat directly. Leave the butter out of the fridge for 30–45 minutes before making the herb butter.
The herbs. Fresh rosemary, fresh thyme, and fresh sage are the classic turkey herb trio and they are all three present in this recipe. Rosemary brings piney, slightly resinous warmth; thyme adds lemony earthiness; sage contributes the distinctive savory note that most people associate with Thanksgiving flavor. All three together, finely chopped, produce a butter that smells like everything a roast turkey dinner should.
Garlic — two or three cloves, minced — adds depth and amplifies the herb flavors.
Lemon zest adds brightness that cuts through the richness of the butter and lifts the herb flavors. One teaspoon, finely grated, is the right amount.
Salt and black pepper — season the butter generously. It needs to season the turkey meat from the inside as it melts, so it should taste well-seasoned, almost aggressively so, before going on the bird.
Getting the butter under the skin. Gently slide your fingers between the skin and the breast meat, carefully separating the membrane without tearing. Work from the cavity end toward the top, creating a pocket on each side of the breastbone. Press half the herb butter into each pocket, then work it from the outside to distribute it evenly across the breast. The remaining butter goes on top of the skin and on the vegetables.
The Vegetable Trivet
A vegetable trivet serves two purposes: it elevates the turkey breast above the liquid at the bottom of the slow cooker, and it flavors the drippings that collect during cooking.
The vegetables. Roughly chopped onion, celery, carrot, smashed garlic cloves, and a few sprigs of fresh herbs arranged on the bottom of the slow cooker insert create the trivet. The turkey rests on top of these vegetables, slightly elevated, which improves air circulation and ensures the breast cooks evenly rather than sitting in liquid.
The liquid. Add a small amount of liquid — half a cup of turkey or chicken broth — to the bottom of the insert. Combined with the juices released by the turkey as it cooks, this produces the dripping base for the pan sauce or gravy.
Do not submerge the turkey. The breast should sit on top of the vegetables, not in liquid. The goal is moist heat from steam, not braising. Braising liquid would prevent the skin from crisping during the broiler finish and would dilute the concentrated drippings.
The Broiler Finish
Just as with the turkey legs earlier in this series, the slow cooker produces perfectly tender meat but pale, soft skin. The broiler finish transforms the skin in minutes.
After the slow cooker is done, transfer the turkey breast to a foil-lined baking sheet. Pat the skin dry with paper towels — thoroughly, firmly, on every surface. Brush with the melted butter that will have pooled in the slow cooker insert. Slide under a preheated broiler at HIGH, 6 inches from the heat, for 5 to 8 minutes until the skin is deeply golden, caramelized, and fragrant.
Watch it continuously. Turkey skin under a hot broiler goes from pale to perfect to burnt in a very short window. Do not walk away.
Making the Gravy
The drippings left in the slow cooker insert after the turkey is removed are liquid gold — butter, turkey fat, herb-infused cooking juices, and the rendered-down vegetables. Do not discard them.
Strain the drippings through a fine-mesh sieve into a measuring jug. You should have approximately 1 to 1.5 cups of liquid. Let it settle for a few minutes — the fat will rise to the top. Skim off most of the fat (or use a fat separator) and reserve the defatted dripping liquid.
Make the gravy. In a small saucepan over medium heat, melt 2 tablespoons of butter. Add 2 tablespoons of flour and whisk for 1 minute to form a roux. Gradually whisk in the strained drippings, then add additional turkey or chicken broth to reach your preferred consistency. Simmer for 3 to 5 minutes, whisking constantly, until smooth and thickened. Season to taste with salt, pepper, and a small squeeze of lemon juice.
For a pan sauce rather than gravy. Skip the roux entirely. Simply reduce the strained drippings in a small saucepan over medium-high heat until thickened and intensified, about 5 to 8 minutes. Stir in a tablespoon of cold butter at the end for gloss and richness. Season and serve. Simpler, glossier, and more elegant than gravy — a matter of preference.
Tips for the Perfect Slow Cooker Turkey Breast
1. Dry brine the night before. Apply the salt component of the herb butter — or just plain kosher salt, 1 teaspoon per pound — to the turkey breast the night before, refrigerating it uncovered. The salt draws moisture to the surface, then reabsorbs it into the meat, seasoning more deeply and producing noticeably juicier, more flavorful turkey. The overnight in the fridge also dries the skin, making it significantly easier to crisp under the broiler.
2. Apply herb butter in all three locations. Under the skin, on top of the skin, and on the vegetables beneath. Butter in all three places ensures the meat is flavored from every direction and the drippings are richly herbed.
3. Cook on LOW — always. HIGH heat in a slow cooker can cook turkey breast unevenly, potentially drying the outer layers before the center reaches temperature. LOW heat, patient and gentle, produces uniformly moist, tender turkey from edge to center.
4. Use a meat thermometer — not time. Turkey breast is done at 165°F (74°C) at the thickest part of the meat, not touching the bone. Slow cooker temperatures vary between models, and turkey breast size varies considerably. A meat thermometer is the only reliable way to know when it is done. Start checking at 5 hours for a smaller breast.
5. Rest before carving. Transfer the turkey to a board after the broiler finish and rest for 15 minutes tented loosely with foil before carving. This allows the juices to redistribute throughout the meat, producing cleaner slices and noticeably juicier meat.
6. Carve against the grain. Slice the breast perpendicular to the muscle fibers — across the grain — for the most tender, easiest-to-eat slices. Slicing with the grain produces long, slightly chewy strands. Against the grain produces clean, short-fibered slices that are unmistakably tender.
7. Save everything. The carcass and bones go into the slow cooker for bone broth. The leftover turkey goes into sandwiches, soup, pot pie filling, and stew. The herb butter drippings become the best gravy you have ever made. Nothing from this recipe should be wasted.
Serving Suggestions
This turkey breast is elegant enough for a holiday table and simple enough for a Sunday dinner. Serve it with:
- Classic mashed potatoes and the herb gravy poured generously over both the turkey and the potatoes
- Roasted root vegetables — carrots, parsnips, and Brussels sprouts roasted in the oven while the turkey finishes under the broiler
- Cornbread stuffing or sage and onion stuffing — baked separately in a dish while the turkey is in the slow cooker
- Cranberry sauce — homemade or store-bought, its tartness cuts perfectly through the richness of the herb butter turkey
- Green beans or asparagus with garlic and lemon
- Sweet potato mash — particularly good with the herb butter drippings spooned over the top
- A simple green salad with a sharp vinaigrette to balance the richness of the main
Easy Variations
- Citrus herb butter. Add the zest of one orange and one lemon to the herb butter, along with 1 teaspoon of dried fennel seeds. A brighter, more aromatic variation particularly good for spring and summer.
- Garlic and herb with white wine. Add half a cup of dry white wine to the slow cooker liquid base instead of just broth. The wine adds acidity and depth to the drippings and produces a more elegant pan sauce.
- Maple dijon glaze. Brush the turkey with a mixture of 2 tablespoons of maple syrup and 1 tablespoon of Dijon mustard before the broiler finish. The glaze caramelizes into a beautiful golden lacquer.
- Cajun spiced turkey breast. Replace the herb butter with a Cajun dry rub worked into the skin and under it — smoked paprika, garlic powder, onion powder, cayenne, thyme, oregano — mixed with softened butter. A completely different character but equally excellent.
- Stuffed turkey breast. Use a boneless turkey breast, butterfly it open, spread with a stuffing of sautéed mushrooms, spinach, garlic, and Parmesan, roll and tie with kitchen twine, and slow cook. More preparation but a spectacular dinner party presentation.
Make-Ahead and Storage
Make-ahead: The herb butter can be made up to 3 days ahead and stored covered in the fridge. The turkey can be dry-brined and herb-buttered the night before and refrigerated, ready to go straight into the slow cooker in the morning.
Refrigerator: Leftover turkey breast keeps well for up to 4 days stored in an airtight container with some of the dripping juices poured over it to keep it moist. Slice only what you need — unsliced turkey stays moister longer.
Freezer: Cooked turkey breast freezes well for up to 3 months. Slice and freeze in portioned amounts with some of the dripping juices frozen alongside. Thaw overnight in the fridge and serve cold or gently warmed.
Gravy: Store gravy separately in an airtight container for up to 4 days or freeze for up to 2 months. Reheat gently on the stovetop, whisking to restore smoothness, adding a splash of broth to loosen if needed.
Shopping List
The Turkey
- 1 bone-in, skin-on turkey breast (4–7 lbs / 1.8–3.2 kg)
The Herb Butter
- 6 tbsp (85g) unsalted butter, softened to room temperature
- 3 cloves garlic, minced
- 1 tbsp fresh rosemary, finely chopped
- 1 tbsp fresh thyme leaves
- 1 tbsp fresh sage, finely chopped
- 1 tsp lemon zest
- 1 tsp salt
- ½ tsp black pepper
- ¼ tsp smoked paprika (optional, adds color and depth)
The Vegetable Trivet
- 1 large onion, roughly quartered
- 2 stalks celery, roughly chopped
- 2 medium carrots, roughly chopped
- 4 cloves garlic, smashed
- 3 sprigs fresh thyme
- 2 sprigs fresh rosemary
- 1 bay leaf
The Liquid Base
- ½ cup (120ml) low-sodium turkey or chicken broth
For the Broiler Finish
- 1 tbsp unsalted butter, melted (for brushing)
For the Gravy (Optional)
- 2 tbsp unsalted butter
- 2 tbsp all-purpose flour
- Additional broth as needed (approximately 1 cup)
- Salt, pepper, and lemon juice to taste
Slow Cooker Turkey Breast with Herb Butter
A perfectly moist, deeply flavored slow cooker turkey breast rubbed all over — under the skin and on top — with a luscious herb butter of rosemary, thyme, sage, garlic, and lemon zest. Cooked low and slow for 6 to 8 hours until the meat is tender and juicy, then finished under the broiler for 5 to 8 minutes until the skin is golden and caramelized. The herb-infused drippings become a spectacular gravy. The best turkey breast you will ever make, with the most forgiving method imaginable.
- Total Time: 7 hours 42 minutes
- Yield: 6 – 8 servings 1x
Ingredients
The Turkey
- 1 bone-in, skin-on turkey breast, 4–7 lbs (1.8–3.2 kg)
The Herb Butter
- 6 tbsp (85g) unsalted butter, completely softened
- 3 cloves garlic, minced
- 1 tbsp fresh rosemary, finely chopped
- 1 tbsp fresh thyme leaves, finely chopped
- 1 tbsp fresh sage, finely chopped
- 1 tsp lemon zest
- 1 tsp salt
- ½ tsp black pepper
- ¼ tsp smoked paprika (optional)
The Vegetable Trivet
- 1 large onion, roughly quartered
- 2 stalks celery, roughly chopped
- 2 medium carrots, roughly chopped
- 4 cloves garlic, smashed
- 3 sprigs fresh thyme
- 2 sprigs fresh rosemary
- 1 bay leaf
The Liquid Base
- ½ cup (120ml) low-sodium turkey or chicken broth
For the Broiler Finish
- 1 tbsp unsalted butter, melted
For the Herb Gravy
- All strained drippings from the slow cooker
- 2 tbsp unsalted butter
- 2 tbsp all-purpose flour
- 1 cup (240ml) additional turkey or chicken broth
- Salt, pepper, and fresh lemon juice to taste
Instructions
- Make the herb butter. In a small bowl, combine the softened butter, minced garlic, rosemary, thyme, sage, lemon zest, salt, pepper, and smoked paprika (if using). Mix with a fork until fully combined and smooth. Taste — it should be well-seasoned, fragrant, and slightly salty.
- Prepare the turkey. If dry-brining the night before, rub 1 teaspoon of salt per pound over the turkey breast surface and refrigerate uncovered overnight. If not dry-brining, pat the turkey completely dry with paper towels.
- Apply the herb butter. Gently slide your fingers under the turkey skin, separating it from the breast meat without tearing. Use half the herb butter and push it into the pocket, pressing from the outside to spread it evenly over as much of the breast meat as possible. Spread the remaining herb butter all over the outside of the skin, coating it completely.
- Build the trivet. Arrange the quartered onion, celery, carrot, smashed garlic, thyme sprigs, rosemary sprigs, and bay leaf on the bottom of the slow cooker insert. Pour the broth over the vegetables.
- Place the turkey. Nestle the turkey breast, skin side up, on top of the vegetable trivet. The turkey should be elevated above the liquid rather than sitting in it.
- Cook. Set the slow cooker to LOW and cook for 6 to 8 hours, until the turkey registers 165°F (74°C) at the thickest part of the breast, not touching the bone. Begin checking with a meat thermometer at the 5-hour mark for smaller breasts (4–5 lbs) and at the 6-hour mark for larger ones.
- Rest the turkey. Carefully remove the turkey from the slow cooker and place on a foil-lined baking sheet, skin side up. Allow to rest for 10 minutes while you preheat the broiler and strain the drippings.
- Strain the drippings. Pour all the liquid from the slow cooker insert through a fine-mesh sieve into a heatproof measuring jug. Press the vegetables to extract maximum flavor. Allow to settle for 5 minutes and skim off the majority of the surface fat, reserving it separately.
- Broil the turkey. Pat the turkey skin completely dry with paper towels. Brush with the melted butter. Place under a preheated broiler set to HIGH, 6 inches from the heat. Broil for 5 to 8 minutes, watching continuously, until the skin is deeply golden, caramelized, and fragrant. Do not walk away.
- Rest and carve. Transfer the broiled turkey to a carving board and rest loosely tented with foil for 15 minutes. Carve by slicing perpendicular to the breastbone — thin, even slices cut against the grain.
- Make the gravy. In a small saucepan over medium heat, melt the butter. Add the flour and whisk for 1 minute until pale golden. Gradually whisk in the strained drippings and additional broth until smooth. Simmer for 3 to 5 minutes, whisking constantly, until thickened to your preferred consistency. Season with salt, pepper, and a squeeze of lemon juice.
- Serve. Arrange the carved turkey slices on a platter or individual plates. Pour the herb gravy generously over the turkey and serve the remainder in a warm jug alongside.
Notes
- Dry brining overnight is the most impactful preparation step. Salting the turkey breast and refrigerating it uncovered overnight does two critical things: the salt penetrates the meat deeply (far more so than same-day seasoning) and the surface of the skin dries out, making it dramatically easier to crisp under the broiler. If you plan even one day ahead, do this.
- Softened butter, not melted. This is not a detail to overlook. Melted butter runs off the meat and collects at the bottom of the slow cooker. Softened butter stays in place under and on the skin, basting the meat from the inside throughout the entire cook. Room temperature butter that holds its shape when pressed but is not cold or hard is exactly right.
- Temperature, not time. Turkey breast sizes vary significantly. A 4-pound breast may be done in 5 hours; a 7-pound breast may need 8. The meat thermometer is the only reliable indicator of doneness — 165°F at the thickest part, not touching the bone.
- The broiler step is non-negotiable. Pale, slow-cooked skin is soft and unappetizing. Five to eight minutes under a hot broiler transforms it into the golden, caramelized, crackling skin that makes roast turkey worth making. It is the step that takes this from good to exceptional.
- Do not discard the drippings. The herb-butter-infused cooking juices are the best part of the whole recipe from a cook’s perspective. Strained and made into gravy, they are extraordinary. If you do not have time to make gravy, at minimum spoon the strained drippings over the carved turkey before serving.
- Rest before carving. Fifteen minutes of resting under foil allows the juices to redistribute through the meat. Carving immediately produces noticeably drier turkey and a pool of juice on the carving board. The rest is part of the recipe.
- Leftovers are exceptional. Slice only what you need. Store unsliced portions of the breast covered with their dripping juices in the fridge. Cold turkey breast from this recipe, on good bread with grainy mustard and a few crisp greens, is one of the great simple lunches.
- Prep Time: 20 minutes (plus optional overnight dry brine)
- Cook Time: 7 hours (on LOW)
- Category: Dinner, Holiday, Main Dish
- Method: Slow Cooking
- Cuisine: American
- Diet: Gluten-Free
Frequently Asked Questions
How do I know when my turkey breast is done in the slow cooker? The only reliable method is an instant-read meat thermometer inserted into the thickest part of the breast, not touching the bone. The turkey is safe and properly cooked when it reads 165°F (74°C). Visual cues alone are not enough — a turkey breast can look cooked on the outside while the center is still underdone, or can look pale and raw-seeming while actually fully cooked. Start checking at 5 hours for a 4 to 5-pound breast and at 6 hours for a larger one. The slow cooker can hold the turkey on WARM for up to 1 hour after it reaches temperature without significant quality loss.
Can I cook a turkey breast on HIGH to save time? It is possible but not recommended. HIGH heat in the slow cooker cooks unevenly — the outer layers of the breast can reach temperature and begin to dry out before the center is done, particularly in a large, dense piece of meat like turkey breast. LOW heat produces uniformly moist, tender meat from edge to center. If time genuinely requires HIGH heat, check for doneness at 3 hours and every 30 minutes after that. The quality difference is noticeable.
Why is my turkey breast dry? Dry turkey breast from a slow cooker is almost always the result of one of three things: overcooking past 165°F, using a turkey breast that was not fully thawed before cooking (creating uneven cooking), or using a very lean boneless turkey breast without enough fat to stay moist. For a bone-in breast, as long as the internal temperature is monitored carefully and the turkey is not left significantly past 165°F, dryness should not be an issue. Storing leftover turkey in its own dripping juices also prevents it from drying out during refrigeration.
Can I stuff the turkey breast before slow cooking? A bone-in turkey breast is not well-suited to traditional stuffing — the bone takes up much of the interior. For a stuffed version, use a boneless turkey breast that has been butterflied open, filled with a stuffing of your choice, rolled, and tied with kitchen twine. This works beautifully in the slow cooker and makes a dramatic dinner party presentation. The cooking time remains similar — check for 165°F at the thickest part.
Can I make this recipe for Thanksgiving? Absolutely — and for a small gathering it is arguably the better choice than a whole turkey. A 6 to 7-pound bone-in turkey breast serves 6 to 8 people generously. It requires no thawing beyond 24 to 48 hours, no trussing, no basting, and no oven temperature management. The slow cooker handles everything, freeing the oven for sides, stuffing, and pies. The herb butter and dripping-based gravy make it festive enough for any holiday table.
What do I do if my turkey breast does not fit in the slow cooker with the lid on? The lid must sit flat and sealed for the slow cooker to function correctly — an unsealed lid allows steam to escape and disrupts the cooking environment. If the breast is too large: try positioning it on its side; consider a larger 7 or 8-quart slow cooker; or use a boneless breast, which is considerably more compact. Do not attempt to force the lid closed over an overfull insert.
Can I use dried herbs instead of fresh in the herb butter? Yes — use one-third of the quantity of dried herbs compared to fresh (so 1 teaspoon dried for every 1 tablespoon fresh called for). Dried herbs are more concentrated than fresh. The flavor will be slightly less bright and fragrant than the fresh version but still very good. Rub the dried herb butter vigorously into the skin to help the herbs adhere, as dried herbs have a tendency to fall off more than fresh.
How long should I rest the turkey before carving? A minimum of 15 minutes, ideally 20, tented loosely with foil. This resting time allows the proteins in the meat to relax and the juices to redistribute throughout the breast. Carving immediately produces a pool of juice on the cutting board and noticeably drier meat. The turkey will not get cold during this rest — it retains heat very well. Use the resting time to finish the gravy and get the sides to the table.
What is the best way to carve a bone-in turkey breast? Place the breast on a sturdy cutting board, skin side up. Run the tip of a sharp carving knife along one side of the breastbone, following the curve of the bone as closely as possible. Once the meat separates from the bone in a single lobe, place it flat on the board and slice across the grain into even slices approximately ½-inch thick. Repeat on the other side. Carving against the grain — perpendicular to the muscle fibers — produces tender, easy-to-eat slices rather than long, slightly chewy strands.
Can I make the herb gravy ahead of time? The dripping-based gravy is best made fresh from the slow cooker drippings on the day of serving — the drippings lose some of their brightness if stored before being made into gravy. However, the finished gravy can be stored in an airtight container in the fridge for up to 4 days or frozen for up to 2 months. Reheat gently on the stovetop over low heat, whisking constantly and adding a splash of broth to restore the consistency. Taste and re-season before serving.