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Peanut Butter Cup Dump Cake

A rich and gooey chocolate cake layered with peanut butter, marshmallow fluff, and peanut butter cups for the ultimate decadent dessert.
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Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes
Servings: 12 squares
Course: Dessert
Cuisine: American
Calories: 420
Ingredients Equipment Method Notes

Ingredients
  

  • 1 box chocolate cake mix
  • 0.5 cup unsalted butter melted
  • 1 cup milk
  • 1 cup creamy peanut butter slightly warmed
  • 7 oz marshmallow fluff
  • 2 cups mini peanut butter cups halved
  • 1 cup chocolate chips
  • 0.5 cup chopped peanuts optional
  • 0.5 cup caramel sauce optional, for drizzling

Equipment

  • Mixing bowl
  • 9x13 baking dish
  • Spatula
  • Microwave-safe bowl

Method
 

  1. Preheat oven to 350°F (175°C) and grease a 9x13-inch baking dish.
  2. Mix chocolate cake mix, melted butter, and milk until combined. Spread into dish.
  3. Warm peanut butter slightly and drizzle half over batter.
  4. Dollop marshmallow fluff on top and swirl lightly with a knife.
  5. Top with half the peanut butter cups and half the chocolate chips.
  6. Bake 35–40 minutes until mostly set in the center.
  7. Drizzle remaining peanut butter and caramel over warm cake. Add remaining candy and peanuts.
  8. Cool 15 minutes before serving.

Notes

Best served warm. Pair with vanilla ice cream for extra indulgence.