Peanut Butter Cup Dump Cake: The Ultimate Easy Dessert

By Sienna Whitman

On December 10, 2025

An extreme close-up of the rich chocolate and peanut butter layers in the dump cake, fresh out of the oven.

Cuisine

American

Prep time

5 minutes

Cooking time

45 minutes

Total time

50 minutes

Servings

12 servings

Get ready to discover your new favorite dessert. This Peanut Butter Cup Dump Cake is the definition of decadent simplicity. Imagine rich chocolate cake, gooey melted peanut butter cups, and a perfectly crisp, buttery topping, all made in one dish with just 5 simple ingredients. It’s a guaranteed crowd-pleaser that requires virtually no effort. If you’re looking for an indulgent treat that’s perfect for any occasion, from family dinners to last-minute parties, this is the recipe you need.

Why You’ll Love This Easy Dump Cake Recipe

This isn’t just another dessert; it’s a game-changer for busy home cooks. It delivers that perfect chocolate and peanut butter combination we all crave, without the complicated steps or long list of ingredients. It’s the perfect solution when you need a stunning dessert in a pinch.

  • Incredibly Easy: With just 5 minutes of prep time, this recipe is perfect for bakers of all skill levels.
  • Minimal Cleanup: Everything comes together in one baking dish, meaning less time washing up.
  • Budget-Friendly: Made with common pantry staples, it’s an affordable way to serve a show-stopping dessert.
  • Perfectly Portioned: It’s great for sharing with family and friends and is always a hit at potlucks.

What Exactly Is a Dump Cake?

A dump cake gets its name from the method of making it: you simply “dump” the ingredients into a baking dish without any mixing. Typically, this involves a layer of fruit or another filling, followed by a dry cake mix, and topped with melted or sliced butter. As it bakes, the butter melts and combines with the cake mix to create a delicious, crumbly, cobbler-like topping. This Peanut Butter Cup Dump Cake recipe follows that same effortless principle for a truly irresistible result.

The finished Peanut Butter Cup Dump Cake in a 9x13 baking dish, with a golden brown, buttery topping.
Fresh from the oven and ready to be devoured.

The 5 Simple Ingredients You’ll Need

You won’t believe how few ingredients are needed to create this masterpiece. Here’s your short shopping list:

  • Chocolate Fudge Cake Mix: A 15.25-ounce box provides the rich, chocolatey base.
  • Sweetened Condensed Milk: One 14-ounce can creates a moist, fudgy layer that’s pure magic.
  • Peanut Butter Cups: You’ll need about 24 regular-sized peanut butter cups, unwrapped and roughly chopped.
  • Unsalted Butter: Two sticks (1 cup), melted, create the golden, buttery crust.
  • Chocolate Chips: A cup of semi-sweet chocolate chips adds an extra layer of chocolatey goodness.

How to Make The Perfect Peanut Butter Cup Dump Cake (Step-by-Step)

Making this peanut butter cup dump cake is as easy as 1-2-3-4. Just layer and bake!

Step 1: Preheat and Prepare

First, preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish with non-stick spray or butter.

Step 2: Layer the Goodness

Pour the sweetened condensed milk evenly across the bottom of the prepared dish. Sprinkle the chopped peanut butter cups and chocolate chips over the milk in an even layer. Finally, sprinkle the dry chocolate fudge cake mix directly on top, covering everything completely.

Step 3: Add the Butter

Gently pour the melted butter as evenly as possible over the dry cake mix. Try to cover as much of the surface as you can to ensure there are no dry patches. Do not stir!

Step 4: Bake to Golden Perfection

Place the baking dish in the preheated oven and bake for 40-45 minutes. The top should be golden brown and bubbly around the edges. Let it cool for about 15 minutes before serving. It’s fantastic served warm, perhaps with a scoop of vanilla ice cream.

An extreme close-up of the rich chocolate and peanut butter layers in the dump cake, fresh out of the oven.
Look at those incredible layers of chocolate and peanut butter!

Pro Tips for The Best Results

While this recipe is incredibly simple, a few tips can take it from great to absolutely unforgettable.

  • Don’t Stir: The magic of a dump cake is in the layers. Resist the urge to mix anything together!
  • Even Butter Distribution: Make sure the melted butter covers most of the cake mix to avoid dry, powdery spots.
  • Let It Set: Allowing the cake to cool for at least 15 minutes helps it set up, making it easier to serve. For another great make-ahead dessert, try these no-bake mini cheesecakes.

Fun Variations to Try

This recipe is a fantastic starting point for creativity. Try one of these delicious twists:

  • Different Cake Mix: Swap the chocolate fudge for a yellow, devil’s food, or even a peanut butter cake mix.
  • Add a Drizzle: After baking, drizzle the top with melted peanut butter or hot fudge sauce.
  • Candy Swap: Use chopped Snickers, Twix, or Butterfinger bars instead of peanut butter cups. If you love pecan flavors, these pecan pie bars are another must-try.

Storing and Reheating Your Dump Cake

Store any leftovers tightly covered in the refrigerator for up to 4 days. You can enjoy it cold or reheat individual portions in the microwave for about 30-45 seconds until warm and gooey again. This cake is almost as good the next day, making it a perfect make-ahead option for any event, much like this crowd-pleasing crescent roll taco bake.

Frequently Asked Questions

Yes, you can adapt this for a slow cooker. Layer the ingredients in the same order in a greased crock pot. Cook on low for 3-4 hours or on high for 2 hours, until the top is set and the edges are bubbling.

Absolutely! While chocolate fudge is a classic choice, this recipe works wonderfully with yellow, devil’s food, or even a spice cake mix for a unique flavor twist.

The dump cake is done when the top is a deep golden brown and the edges are bubbly. You can also insert a toothpick into the center; it should come out mostly clean with some moist crumbs attached.

Store any leftovers in an airtight container or covered tightly with plastic wrap in the refrigerator for up to 4 days. You can reheat it in the microwave for 30-45 seconds to get it warm and gooey again.

For this recipe, we recommend using melted butter. Pouring it evenly over the top ensures the cake mix gets fully saturated, preventing dry spots and creating a more uniform, buttery crust.

Peanut Butter Cup Dump Cake Recipe

An extreme close-up of the rich chocolate and peanut butter layers in the dump cake, fresh out of the oven.

Peanut Butter Cup Dump Cake: The Ultimate Easy Dessert

This Peanut Butter Cup Dump Cake is the ultimate easy dessert, made with just 5 ingredients! A rich chocolate cake base is layered with gooey peanut butter cups and a buttery topping.
Prep Time 5 minutes
Cook Time 45 minutes
Total Time 50 minutes
Course Dessert
Cuisine American
Servings 12 servings
Calories 450 kcal

Equipment

  • 1 9x13 inch baking dish
  • 1 Mixing bowl For melting butter

Ingredients
  

  • 1 can sweetened condensed milk 14 ounces
  • 24 peanut butter cups regular-sized, unwrapped and roughly chopped
  • 1 cup semi-sweet chocolate chips
  • 1 box chocolate fudge cake mix 15.25 ounces
  • 1 cup unsalted butter 2 sticks, melted

Instructions
 

  • Preheat oven to 350°F (175°C). Grease a 9x13-inch baking dish.
  • Pour the sweetened condensed milk evenly into the bottom of the dish. Sprinkle the chopped peanut butter cups and chocolate chips over the milk. Top with the dry cake mix, spreading it evenly.
  • Pour the melted butter evenly over the dry cake mix. Do not stir.
  • Bake for 40-45 minutes, or until the top is golden brown and the edges are bubbly.
  • Let the cake cool for at least 15 minutes before serving. It is best served warm.

Notes

For best results, ensure the melted butter covers as much of the dry cake mix as possible to avoid powdery spots.
Store leftovers in an airtight container in the refrigerator for up to 4 days.

Pin This Recipe For Later!

Don’t lose this recipe! Save it to your favorite dessert board on Pinterest. It’s the perfect treat to have on hand for your next sweet craving.

A delicious slice of Peanut Butter Cup Dump Cake on a white plate, showcasing the rich chocolate cake and gooey peanut butter cup layers. The perfect easy dessert recipe.
It doesn't get much better (or easier) than this!

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