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Slow Cooker Birthday Cake Fudge (Party Dessert)

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Dense, creamy white chocolate fudge packed with birthday cake flavor from real boxed white cake mix, loaded with rainbow sprinkles throughout and blanketed in a colorful sprinkle topping — made in the slow cooker in under two hours and set in the refrigerator overnight. The most cheerful, crowd-pleasing, genuinely festive party dessert you can make with almost no effort. Cut into small squares, pile onto a tiered stand, and watch them vanish.

  • Total Time: 3 hours 10 minutes (or overnight)
  • Yield: Approximately 64 one-inch squares 1x

Ingredients

Scale

The Fudge Base

  • 16 oz (450g) good quality white chocolate chips or chopped white chocolate bar
  • 1 can (14 oz / 397g) sweetened condensed milk
  • 4 tbsp (60g) unsalted butter, cut into pieces
  • 1 box (15.25 oz / 432g) white cake mix (or Funfetti)
  • 1 tsp pure vanilla extract
  • ¼ tsp almond extract (optional)
  • Pinch of salt

The Sprinkles

 

  • ½ cup (about 90g) rainbow jimmies — stirred in
  • ¼ cup (about 45g) rainbow jimmies or nonpareils — for the top

Instructions

  • Prepare the pan. Line an 8×8 or 9×9-inch square baking pan with parchment paper, leaving overhang on two sides for lifting. Lightly grease the parchment with cooking spray or butter.
  • Melt the base. Add the white chocolate chips, sweetened condensed milk, and butter pieces to the slow cooker insert. Set to LOW.
  • Melt slowly. Cook on LOW for 45 minutes to 1 hour, stirring gently with a rubber spatula every 15 to 20 minutes, until the white chocolate and butter are completely melted and the mixture is smooth and glossy.
  • Add the cake mix. Turn off the slow cooker. Add the dry white cake mix, vanilla extract, almond extract (if using), and salt to the melted mixture. Stir vigorously with the rubber spatula until the cake mix is completely incorporated and the fudge is smooth with no dry streaks. The mixture will be very thick.
  • Fold in the sprinkles. Gently fold ½ cup of rainbow jimmies into the fudge mixture. Work quickly — the fudge is beginning to set.
  • Pour immediately. Pour and scrape the fudge mixture into the prepared pan. Work quickly. Spread into an even layer with the spatula, pressing to fill the corners.
  • Top with sprinkles. Immediately scatter the remaining ¼ cup of rainbow jimmies generously over the top of the warm fudge, pressing very gently so they adhere to the surface.
  • Refrigerate. Cover the pan loosely and refrigerate for a minimum of 2 hours, or overnight for best results, until the fudge is completely firm.
  • Cut and serve. Remove the fudge from the fridge 15 minutes before cutting. Use the parchment overhang to lift the slab out of the pan. Place on a cutting board. Using a sharp knife wiped clean between each cut, slice into 1-inch squares. Arrange on a platter or tiered dessert stand and serve.

Notes

  • Use real white chocolate. The quality of the white chocolate is immediately tasted in this simple fudge. Chips or bars containing cocoa butter (look for it in the ingredient list) produce a creamier, richer, more flavorful result than vegetable oil-based white baking chips.
  • Do not rush the melt. White chocolate is sensitive to heat — it can scorch and seize quickly at high temperatures. The slow cooker’s LOW setting is ideal. Stir gently every 15 to 20 minutes and be patient. Rushing with higher heat produces grainy, seized chocolate.
  • Add cake mix to fully melted chocolate only. Stirring dry cake mix into partially melted white chocolate creates lumps that are difficult to remove. Wait for complete melting before adding the dry ingredients.
  • Work quickly after turning off the heat. Once the cake mix goes in, the fudge begins setting fast. Have the pan ready, the spatula in hand, and the sprinkles measured before you add the cake mix. Pour and top within 3 to 4 minutes.
  • Jimmies, not nonpareils, for mixing in. Nonpareils bleed their color when mixed into the warm fudge, creating a tie-dye effect that looks beautiful but is different from the classic rainbow sprinkle look. Use jimmies for the mixed-in sprinkles. Either type works for the top.
  • Small squares are the right size. This fudge is intensely sweet and rich — 1-inch squares are the correct serving size for a party setting where people are also eating other things. Larger squares are overwhelming. Smaller squares let people take a second piece without guilt.
  • Overnight refrigeration is best. Two hours is the minimum for setting but overnight in the fridge produces a noticeably firmer, more sliceable fudge with better texture and more developed flavor. Make it the day before whenever possible.
  • Author: Elle
  • Prep Time: 10 minutes
  • Cook Time: Cook Time1 hour (on LOW) Setting Time: 2 hours minimum (overnight recommended)
  • Category: Candy, Dessert, Party Food
  • Method: Slow Cooking
  • Cuisine: American
  • Diet: Vegetarian

Find it online: https://slowcookerrecipes.us/slow-cooker-birthday-cake-fudge/