Rich Peanut Butter Cup Dump Cake

Featured in: Sweet Tooth Fix

This luscious chocolate-peanut butter dessert combines the convenience of a dump cake with the indulgence of peanut butter cups. A layer of creamy peanut butter forms the base, topped with an easy devil's food cake batter made with just three ingredients. The finishing touch comes from scattered mini peanut butter cups and chocolate chips that create a gooey, candy-studded topping as it bakes.

What makes this treat special is how the peanut butter layer melts into the warm cake, creating fudge-like pockets throughout each slice. The cake emerges from the oven with a slightly crisp, candy-topped surface and a tender, moist interior that perfectly balances rich chocolate and nutty peanut butter flavors.

Perfect for potlucks, family gatherings, or whenever you need a sweet fix with minimal effort, this dessert serves 10 generous portions and comes together in under an hour. Serve it warm for the ultimate gooey experience, or let it cool completely for cleaner slices.

Updated on Mon, 26 Jan 2026 13:34:28 GMT
Warm slice of Rich Peanut Butter Cup Dump Cake with melted peanut butter and chocolate layers topped with gooey mini peanut butter cups. Save
Warm slice of Rich Peanut Butter Cup Dump Cake with melted peanut butter and chocolate layers topped with gooey mini peanut butter cups. | tastyeffect.com

Experience the ultimate dessert fusion with this Rich Peanut Butter Cup Dump Cake. This decadent, crowd-pleasing dessert features layers of creamy peanut butter, moist chocolate cake, and gooey peanut butter cups for the ultimate chocolate-peanut butter experience. It is perfect for gatherings or as a simple weeknight treat that everyone will love.

Warm slice of Rich Peanut Butter Cup Dump Cake with melted peanut butter and chocolate layers topped with gooey mini peanut butter cups. Save
Warm slice of Rich Peanut Butter Cup Dump Cake with melted peanut butter and chocolate layers topped with gooey mini peanut butter cups. | tastyeffect.com

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The beauty of this recipe lies in its simplicity. By layering basic pantry staples like cake mix and peanut butter, you create a complex flavor profile that tastes like it came from a professional bakery. The result is a moist, vegetarian-friendly dessert that satisfies every chocolate and peanut butter craving.

Ingredients

  • 1 box (about 15.25 oz / 432 g) devils food chocolate cake mix
  • 1 cup (250 g) creamy peanut butter, at room temperature
  • ½ cup (115 g) unsalted butter, melted
  • 1½ cups (360 ml) whole milk
  • 1 cup (about 150 g) mini peanut butter cups, unwrapped
  • ½ cup (90 g) semi-sweet chocolate chips
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Instructions

Step 1
Preheat oven to 350°F (175°C). Lightly grease a 9x13-inch (23x33 cm) baking dish with nonstick spray or butter.
Step 2
Spread the creamy peanut butter evenly over the bottom of the prepared baking dish.
Step 3
In a large mixing bowl, whisk together the chocolate cake mix, melted butter, and milk until the batter is mostly smooth (some small lumps are fine).
Step 4
Pour the cake batter evenly over the peanut butter layer in the baking dish.
Step 5
Scatter the mini peanut butter cups and chocolate chips evenly over the top of the batter.
Step 6
Bake for 35–40 minutes, or until the cake is set and a toothpick inserted into the center comes out mostly clean (a few moist crumbs are fine).
Step 7
Remove from oven and let cool for at least 15 minutes before serving warm. For cleaner slices, allow to cool completely. Serve as is or with a scoop of vanilla ice cream.

Zusatztipps für die Zubereitung

For the best texture, ensure your peanut butter is at room temperature so it spreads easily across the baking dish. If you need to store leftovers, keep them covered at room temperature for up to 2 days or refrigerate for up to 5 days to maintain the cake's moisture.

Varianten und Anpassungen

Personalize your dump cake by sprinkling ½ cup chopped roasted peanuts over the top before baking for an extra crunch. You can also substitute almond butter for a different flavor profile or swap the semi-sweet chocolate chips for white chocolate chips to add a sweeter twist.

Serviervorschläge

While this cake is delicious on its own, it is truly spectacular when served warm with a scoop of vanilla ice cream melting over the top. Letting it cool for 15 minutes is key for the best serving consistency, though cooling completely will provide much cleaner slices.

Decadent Rich Peanut Butter Cup Dump Cake recipe served warm with vanilla ice cream melting over the moist chocolate and peanut butter layers. Save
Decadent Rich Peanut Butter Cup Dump Cake recipe served warm with vanilla ice cream melting over the moist chocolate and peanut butter layers. | tastyeffect.com

With its easy assembly and rich, gooey results, this Rich Peanut Butter Cup Dump Cake is sure to become a staple in your dessert rotation. Enjoy every decadent bite of this classic American flavor combination!

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Recipe FAQ

Can I use natural peanut butter instead of creamy?

Natural peanut butter can be used, but it may result in a slightly different texture. The oils in natural peanut butter separate more easily, which can affect how the layer spreads and bakes. For the creamiest, most consistent results, use conventional creamy peanut butter.

What's the best way to serve this cake?

For the most indulgent experience, serve warm (about 15 minutes after removing from the oven) when the peanut butter layer is still gooey. A scoop of vanilla ice cream complements the rich flavors beautifully. If you prefer neat slices, let it cool completely before cutting.

Can I make this ahead of time?

Yes, you can prepare this cake up to 24 hours in advance. Once completely cooled, cover tightly and store at room temperature. The flavors often develop even more overnight. Warm individual slices in the microwave for 20-30 seconds if you prefer that gooey fresh-baked texture.

How should I store leftovers?

Store covered at room temperature for up to 2 days, or refrigerate for up to 5 days. The cake becomes more dense and fudge-like when chilled. If refrigerating, bring to room temperature or warm slightly before serving for the best texture and flavor.

Can I substitute the cake mix?

While devil's food cake mix provides the best chocolate flavor, you can use any chocolate cake mix you prefer. For a homemade option, prepare your favorite chocolate cake batter but keep it slightly thicker than usual to prevent it from sinking into the peanut butter layer.

What other mix-ins can I add?

For extra crunch and flavor, consider adding ½ cup chopped roasted peanuts, Reese's Pieces, or chopped pretzels. You could also swirl in caramel sauce or Nutella with the peanut butter layer for additional depth of flavor.

Rich Peanut Butter Cup Dump Cake

Decadent layers of creamy peanut butter, rich chocolate cake, and gooey peanut butter cups make this crowd-pleasing dessert irresistible.

Prep duration
10 min
Cook duration
40 min
Complete duration
50 min
Created by Jane Miller


Skill level Easy

Heritage American

Output 10 Portions

Dietary requirements Meat-free

Components

Cake Base

01 1 box (15.25 oz) devil's food chocolate cake mix
02 1 cup creamy peanut butter, room temperature
03 ½ cup unsalted butter, melted
04 1½ cups whole milk

Toppings

01 1 cup mini peanut butter cups, unwrapped
02 ½ cup semi-sweet chocolate chips

Directions

Phase 01

Prepare Baking Dish: Preheat oven to 350°F. Lightly grease a 9x13-inch baking dish with nonstick spray or butter.

Phase 02

Layer Peanut Butter Base: Spread creamy peanut butter evenly over the bottom of the prepared baking dish.

Phase 03

Prepare Cake Batter: In a large mixing bowl, whisk together chocolate cake mix, melted butter, and milk until mostly smooth with small lumps acceptable.

Phase 04

Layer Cake Batter: Pour cake batter evenly over the peanut butter layer in the baking dish.

Phase 05

Add Toppings: Scatter mini peanut butter cups and chocolate chips evenly over the top of the batter.

Phase 06

Bake: Bake for 35 to 40 minutes until the cake is set and a toothpick inserted in the center comes out mostly clean with a few moist crumbs acceptable.

Phase 07

Cool and Serve: Remove from oven and cool for at least 15 minutes before serving warm. For cleaner slices, allow to cool completely. Serve as is or with vanilla ice cream.

Necessary tools

  • 9x13-inch baking dish
  • Large mixing bowl
  • Whisk or spatula
  • Measuring cups and spoons

Allergy details

Review each component for potential allergens and seek professional healthcare advice if uncertain.
  • Contains milk, wheat (gluten), peanuts, and soy
  • May contain tree nuts - check labels on chocolate and cake mix
  • Always verify ingredient labels for potential allergens

Nutritional information (per portion)

These values are approximate guides only and shouldn't replace professional medical consultation.
  • Energy: 430
  • Fats: 26 g
  • Carbohydrates: 48 g
  • Proteins: 7 g