Slow Cooker Butterfinger Dessert Cake Recipe

This six-ingredient slow cooker Butterfinger cake is incredibly moist and simple to make. It comes together in minutes and finishes in the crockpot, creating a dessert that’s sure to become a favorite with family and friends.

butterfinger cake in slow cooker with hot fudge topping.

Why this recipe works

Cooking a cake slowly in a crockpot yields a tender, moist texture that differs from oven-baked cakes. This recipe uses a boxed cake mix, so there’s no need to bake from scratch—just mix, add chopped Butterfingers, and let the slow cooker do the rest. Instead of slicing, the cake is spooned out for serving, which highlights the soft, tender crumb.

Preparation is minimal: mix the dry cake mix with melted butter, water, and eggs, fold in chopped Butterfinger pieces, and pour the batter into a greased slow cooker. The cake finishes in about two hours, and a warm jar of hot fudge makes a decadent finish. If you have extra candy bars to use up, consider other Butterfinger-inspired treats.

Is this similar to a poke cake?

The cake as written doesn’t require poking holes, but you can easily turn it into a poke cake. Once the cake is cooked and still warm, poke holes across the surface and pour warmed hot fudge (or another sauce) over it so the topping sinks into the cake for extra richness.

Recipe Ingredients

ingredients for butterfinger cake on a table.
  • Cake Mix: 15.25 oz. yellow cake mix (chocolate or devil’s food work for a variation).
  • Eggs: 3 large eggs.
  • Water: 1 cup.
  • Butter: 1/2 cup melted butter.
  • Butterfinger Bars: About 9 fun-size bars (or 3 regular), coarsely chopped and folded into the batter and reserved for garnish.
  • Hot Fudge: 16 oz. jar, warmed and poured over the cake before serving.

Step-by-Step Directions

6 images about how to mix cake mix, and assemble butterfinger cake in slow cooker.

Step One – In a large bowl, combine the cake mix, melted butter, water, and eggs. Stir until combined; a few lumps are fine—don’t overmix.

Step Two – Coarsely chop the Butterfinger bars into bite-sized pieces so you have chunks throughout the batter.

Step Three – Fold the chopped Butterfingers into the cake batter gently so they stay in pieces.

Step Four – Spray the slow cooker insert with nonstick spray and pour in the batter. Cover and cook on HIGH for 1 hour 45 minutes to 2 hours, or until the center is set.

Step Five – Warm the jar of hot fudge in the microwave (lid off) for about 30 seconds or until pourable. Pour the hot fudge over the cake and spread with a spoon.

Step Six – Sprinkle additional chopped Butterfingers on top. Serve warm with a scoop of ice cream or whipped topping.

overhead shot of butterfinger cake with hot fudge topping in crockpot.

Variations

  • Chocolate Cake: Swap in a chocolate or devil’s food cake mix for a richer base that pairs well with Butterfinger pieces.
  • Alternate Toppings: Try caramel sauce, cream cheese frosting, whipped cream, or milk chocolate syrup instead of—or alongside—hot fudge.
  • Different Candies: Substitute other chopped candy bars like Snickers, Reese’s, or Heath for a different flavor profile.
scoop taken out of butterfinger cake in slow cooker.

How to Serve

Serve this Butterfinger cake warm with a scoop of vanilla or caramel ice cream. A dollop of whipped cream or cool whip is also delicious. Finish with extra chopped Butterfingers for crunch and visual appeal.

slice of butterfinger cake with ice cream on top.

Recipe FAQs

How do I store leftovers?

Allow the cake to cool completely, then transfer leftovers to an airtight container and refrigerate for up to one week.

Can I serve this cold?

Yes. Leftover Butterfinger cake is still enjoyable cold, just like most cakes.

More Slow Cooker Cake Recipes:

  • Reese’s Peanut Butter Cup Chocolate Cake (crockpot)
  • Slow Cooker Gingerbread Cake
  • Crockpot Caramel Cake
  • Hot Fudge Pudding Cake
  • Crockpot Key Lime Cake
  • Cherry Chocolate Dump Cake
  • Slow Cooker Pineapple Coconut Spoon Cake
scoop taken out of butterfinger cake in slow cooker.

Slow Cooker Butterfinger Cake

5 from 3 votes
Prep Time: 10 mins
Cook Time: 1 hr 45 mins
Total Time: 1 hr 55 mins
Servings: 8
By: Sarah Olson
Yellow cake filled with Butterfinger bars and topped with rich hot fudge. If you love Butterfingers, this cake delivers.
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How to Video

Equipment

  • Slow cooker, 6 quart or larger (oval recommended)

Ingredients

  • 15.25 oz. yellow cake mix
  • 1/2 cup melted butter
  • 1 cup water
  • 3 large eggs
  • 9 fun-size Butterfingers, sliced (or about 3 regular bars)
  • 16 oz. jar hot fudge

For serving

  • Additional chopped Butterfingers for garnish
  • Vanilla ice cream

Instructions

  • In a large bowl, add cake mix, melted butter, water, and eggs. Mix until combined; don’t overmix.
  • Slice the Butterfinger bars into roughly 1/4-inch pieces. Add them to the batter and gently stir.
  • Spray the slow cooker with nonstick spray and pour in the batter.
  • Cover and cook on HIGH for 1 hour 45 minutes to 2 hours, or until the center is set.
  • Warm the hot fudge in the microwave until pourable, then spread it over the cake.
  • Top with more chopped Butterfingers and serve with ice cream.

Sarah’s Notes

  1. Let the cake cool completely before storing leftovers in an airtight container in the refrigerator for up to one week.
  2. Leftover Butterfinger cake is enjoyable cold as well as warm.

Nutrition

Calories: 626 kcal | Carbohydrates: 97 g | Protein: 8 g | Fat: 24 g

Nutrition info is an estimate. If you follow a specific diet, calculate nutrition using your preferred tool.



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