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Peanut Butter Cup Dump Cake Recipe

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4.6 from 49 reviews

This Peanut Butter Cup Dump Cake is a luscious dessert featuring layers of creamy peanut butter, rich chocolate cake, and melty peanut butter cups. With minimal prep and no fuss, this cake combines the fudgy ribbon of peanut butter with moist, chocolaty goodness topped with chocolate chips for a perfect indulgent treat.

Ingredients

Peanut Butter Layer

  • 1 cup creamy peanut butter
  • 1/2 cup melted real butter

Cake Batter

  • 1 box devil’s food chocolate cake mix
  • 1 1/2 cups whole milk

Toppings

  • 1 cup mini peanut butter cups
  • 1/2 cup semi-sweet chocolate chips

Instructions

  1. Preparing the Peanut Butter Layer: Take the room-temperature peanut butter and spread it evenly across the bottom of a greased baking pan using a butter knife or offset spatula. Aim for full coverage to create a fudgy base as it bakes.
  2. Mixing the Batter: In a large bowl, combine the chocolate cake mix, melted butter, and milk. Whisk until smooth with no dry spots, leaving a few tiny lumps for the best texture. The batter should be thick but pourable, like pancake batter. Adjust the consistency with a splash more milk if too thick or a tablespoon of flour if too thin.
  3. Baking and Topping: Pour the chocolate batter over the peanut butter layer, letting it spread evenly. Sprinkle mini peanut butter cups and chocolate chips over the top. Bake in a preheated oven at 350°F for 40 minutes or until the edges pull away and a toothpick comes out with moist crumbs. Cool for at least 15 minutes before serving to allow the layers to set.

Notes

  • Allow ingredients, especially peanut butter, to come to room temperature for easy spreading and smoother layers.
  • Check your oven temperature early at 30 minutes since ovens may vary; look for moist crumbs on a toothpick test.
  • Use mini peanut butter cups as regular-sized ones do not melt as evenly.
  • Patience with cooling results in cleaner slices and better texture.
  • Real butter improves flavor and texture significantly over margarine or substitutes.