Ingredients
Scale
The Rack
- 1 rack baby back ribs, 1.5–2.5 lbs (680g–1.1kg)
The Dry Rub
- 1½ tsp salt
- 1 tsp smoked paprika
- 1 tsp brown sugar
- ½ tsp garlic powder
- ½ tsp onion powder
- ½ tsp black pepper
- ¼ tsp cayenne pepper
- ¼ tsp dried mustard powder
The Glaze
- ¾ to 1 cup (180–240ml) BBQ sauce, divided, plus more for serving
Instructions
- Remove the membrane. Lay the rack bone-side up on a cutting board. Slide a butter knife under the thin papery membrane at one end of the rack to loosen a corner. Grip the loosened edge firmly with a paper towel and pull steadily — it should release in one piece. Discard.
- Make and apply the rub. Combine all dry rub ingredients in a small bowl and mix well. Apply the rub generously to every surface of the rack — top, bottom, and sides — pressing it firmly into the meat so it adheres. Apply more than feels comfortable. All of the rub should be used.
- Load the slow cooker. Curl the rack into a C-shape, meat side facing outward, and stand it upright around the inside perimeter of a 6-quart oval slow cooker. Alternatively, cut the rack into two or three sections with kitchen shears and lay flat. Do not add any liquid.
- Cook. Place the lid on the slow cooker. Set to LOW and cook for 5 to 7 hours, until the meat has pulled back from the ends of the bones by at least ½ inch, the rack bends easily when lifted from the center, and a fork inserted into the thickest part of the meat meets no resistance.
- Preheat the broiler. In the final 15 minutes of cooking, preheat the oven broiler to HIGH. Line a large rimmed baking sheet with foil.
- Transfer the rack. Using two sets of tongs or a large spatula, carefully transfer the rack to the prepared baking sheet, bone side down. The rack will be very tender and may want to fall apart — handle gently.
- First coat and broil. Apply a generous coat of BBQ sauce to the top and sides of the rack using a pastry brush. Place under the broiler 5 to 6 inches from the element. Broil for 3 to 4 minutes, watching constantly, until the sauce is bubbling and beginning to caramelize at the edges.
- Second coat and finish. Remove the baking sheet from the broiler. Apply a second generous coat of BBQ sauce directly over the first. Return to the broiler for a final 1 to 2 minutes until the second layer is caramelized, sticky, and darkened at the edges. Watch continuously — the glaze can go from perfect to scorched in under a minute.
- Rest and serve. Remove from the broiler and rest for 5 minutes. Cut between the bones with a sharp knife or kitchen shears into individual ribs or 2 to 3 rib sections. Serve immediately with extra warmed BBQ sauce alongside.
Notes
- Remove the membrane — it is not optional. The membrane does not soften or break down during the slow cook regardless of how long the ribs cook. Ribs served with the membrane intact have a tough, chewy layer on the bone side that no amount of tenderness in the meat compensates for. Thirty seconds with a butter knife and paper towel. Do it every time.
- No liquid in the slow cooker. The fat and natural moisture in the rack are sufficient. Added liquid produces ribs that taste steamed rather than braised in their own drippings — the texture and flavor are noticeably inferior. Trust the process.
- Curl, don’t snap. When fitting the rack into the slow cooker, the ribs should curve, not crack. If the rack is too long to curl without snapping the bones, cut it in half with kitchen shears before inserting. Two half-racks stacked is fine — the lower rack cooks slightly more intensely but both come out well.
- The bend test. The most reliable visual check for done slow cooker ribs: lift the rack from the center with tongs. If the ends drop down and the surface of the meat cracks slightly — it is done. If it holds rigid or straight — it needs more time.
- Two coats of sauce is better than one. The first coat caramelizes and forms the base of the glaze. The second coat applied mid-broil adds another layer of sauce and prevents the first layer from drying out or burning. The difference is visible and worth the 90 seconds.
- Watch the broiler every second. The sugar in the BBQ sauce — and in the brown sugar in the rub — caramelizes very quickly under a preheated broiler. Stand at the oven. Check at the 3-minute mark. Adjust the rack distance if the sauce is charring faster than it is caramelizing. Perfectly charred edges are the goal; uniformly black is not.
- Save the cooking juices. The liquid that accumulates in the slow cooker during the cook is rendered pork fat and deeply flavored drippings. Strain it, refrigerate it overnight, remove the solidified fat layer, and use the clarified juices as a flavor base for baked beans, pork braises, or stirred into BBQ sauce. It is extraordinary.
- Prep Time: 10 minutes
- Cook Time: 5–7 hours (on LOW)
- Category: BBQ, Dinner, Main Dish
- Method: Slow Cooking
- Cuisine: American
- Diet: Dairy-Free, Gluten-Free