If you’re craving a dessert that’s ridiculously easy to make but delivers an explosion of rich, decadent flavor, you’ve come to the right place. This Peanut Butter Cup Dump Cake is the ultimate sweet treat for anyone who loves the classic combination of chocolate and peanut butter. It’s a one-pan wonder that requires minimal effort and just a handful of simple ingredients, making it the perfect solution for last-minute gatherings, potlucks, or a simple weeknight indulgence. Forget complicated steps and a sink full of dishes; this recipe is all about dumping, baking, and enjoying.
We’re combining the simplicity of a boxed cake mix with the irresistible allure of melted peanut butter cups to create a dessert that’s part cake, part cobbler, and 100% delicious. Let’s dive in and make the easiest dessert you’ll talk about for weeks.

Why This Peanut Butter Cup Dump Cake Recipe is a Must-Try
This isn’t just another dessert recipe; it’s a game-changer for busy home cooks. It’s designed for maximum flavor with minimum fuss.
- Incredibly Easy: With just 5 minutes of prep time, it’s the perfect recipe for beginners or when you need a dessert in a pinch.
- Minimal Ingredients: You only need 5 basic ingredients that you might already have in your pantry.
- Crowd-Pleasing Flavor: The rich chocolate and gooey peanut butter combination is a guaranteed hit with both kids and adults.
- Perfect for Any Occasion: It’s rustic enough for a family dinner but decadent enough for a party.
What Exactly is a Dump Cake?
For the uninitiated, a “dump cake” is a wonderfully simple dessert that lives up to its name. You literally dump the ingredients into a baking dish in layers without any mixing. The magic happens in the oven, where the dry cake mix combines with the butter and other ingredients to form a delicious, tender, cobbler-like topping over a warm, gooey base. It’s the ultimate low-effort, high-reward dessert.
The 5 Simple Ingredients You’ll Need
The beauty of this Peanut Butter Cup Dump Cake lies in its simplicity. Here’s all you need:
- Chocolate Cake Mix: A 15.25 oz box of Devil’s Food or Chocolate Fudge cake mix provides the rich, chocolatey base.
- Peanut Butter Cups: About 30 regular-sized chocolate peanut butter cups. These create the gooey, molten candy layer.
- Milk: This adds necessary moisture, helping to create the perfect cake-like texture.
- Butter: Melted unsalted butter is poured over the top, which is key to creating that signature crispy, yet tender crust.
- Chocolate Chips: While optional, a cup of semi-sweet chocolate chips enhances the richness and adds another layer of texture.
How to Make Peanut Butter Cup Dump Cake: A Step-by-Step Guide
Ready for the easiest baking instructions ever? Here’s how to assemble your new favorite dessert in just a few simple steps.
- Preheat and Prep: Start by preheating your oven to 350°F (175°C). Lightly grease a 9×13 inch baking dish.
- Layer the Candy: Unwrap the peanut butter cups and arrange them in a single, even layer on the bottom of the dish.
- Add Moisture: Pour the milk evenly over the layer of peanut butter cups.
- Dump the Cake Mix: Sprinkle the entire box of dry cake mix over the milk and candy. Spread it out, but do not stir it in!
- Top with Butter: Pour the melted butter as evenly as you can over the dry cake mix, covering as much surface area as possible. If you added chocolate chips, sprinkle them on before the butter.
- Bake to Perfection: Bake for 35-40 minutes. The top should be set, and you’ll see the edges bubbling with chocolatey-peanut butter goodness.
- Cool and Serve: Let the cake cool for about 15 minutes before serving. It is absolutely heavenly when served warm.

Pro Tips for the Perfect Chocolate Peanut Butter Dump Cake
While this recipe is nearly foolproof, a few simple tips can take it from great to absolutely unforgettable.
- Don’t Mix: Resist the temptation to stir the layers together. The distinct layers are what give a dump cake its unique and delicious texture.
- Ensure Butter Coverage: Try to cover as much of the dry cake mix as possible with the melted butter. This prevents dry, powdery spots and ensures a perfect crust.
- Let It Rest: Allowing the dump cake to cool for at least 15 minutes lets it set up properly, making it easier to serve.
- Serve it Warm: This dessert is at its absolute best when it’s warm and gooey, especially with a scoop of vanilla ice cream that melts into every bite. For another amazing warm dessert, try this incredible Chocolate Chip Cookie Pie.
Delicious Variations to Try
One of the best things about this recipe is how easy it is to customize. Here are a few ideas to get you started:
- Different Cake Mix: Swap the chocolate cake mix for a yellow cake mix, or even a peanut butter flavored one if you can find it.
- Add a Crunch: Sprinkle a half cup of chopped peanuts or pecans over the top before baking for a nice crunch.
- Candy Swaps: No peanut butter cups? Use chopped peanut butter candy bars, peanut butter chips, or a mix of chocolate and peanut butter chips instead.
- Slow Cooker Version: You can easily make this in a Crock Pot! Layer ingredients as instructed, and cook on high for 2 hours or low for 3-4 hours.
How to Store and Reheat Your Dump Cake
If you have leftovers (which is a big “if”!), storing them is simple. Cover the baking dish tightly with foil or a lid and refrigerate for up to 4 days. You can enjoy it cold straight from the fridge, or reheat individual portions in the microwave for about 30-45 seconds until warm and gooey again. These Butterscotch Bars also store incredibly well.
Frequently Asked Questions
Absolutely! To adapt this recipe for a Crock Pot, layer the ingredients as directed in the slow cooker. Cook on low for 3-4 hours or on high for 2 hours, until the top is set.
No, and you shouldn’t! The magic of a dump cake is in the layers. Sprinkling the dry cake mix over the wet ingredients and topping with melted butter creates a delicious, cobbler-like topping as it bakes.
Store any leftover dump cake 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 seconds.
This rich dessert is fantastic on its own, but it’s even better served warm with a scoop of vanilla ice cream, a dollop of whipped cream, or a drizzle of hot fudge sauce.
A Devil’s Food or Chocolate Fudge cake mix works best for a rich, deep chocolate flavor. However, you can also experiment with a yellow or even a peanut butter flavored cake mix for a different twist.
More Decadent Desserts You’ll Love
If this easy dessert has you inspired, you’re in the right place! For a nutty and rich treat, these Pecan Pie Cheesecake Bars are a must-try. And if you love fruity desserts, you can’t go wrong with these simple and delicious Raspberry Crumble Bars.
Share Your Creation!
This Peanut Butter Cup Dump Cake is more than just a recipe; it’s a shortcut to pure happiness. It proves that you don’t need to spend hours in the kitchen to create something truly special and delicious. We know you’ll love making and sharing this incredible dessert. If you make it, be sure to leave a comment below and share a photo of your masterpiece on Pinterest!

Peanut Butter Cup Dump Cake Recipe

Peanut Butter Cup Dump Cake (The Easiest, Most Decadent Dessert!)
Ingredients
Equipment
Instructions
- Preheat oven to 350°F (175°C). Grease a 9x13 inch baking dish.
- Arrange the unwrapped peanut butter cups in a single layer across the bottom of the prepared dish.
- Pour the milk evenly over the peanut butter cups.
- Sprinkle the dry chocolate cake mix evenly over the milk and peanut butter cups. Do not stir.
- If using, sprinkle the chocolate chips over the cake mix.
- Pour the melted butter as evenly as possible over the entire surface of the cake mix.
- Bake for 35-40 minutes, or until the top is set and the edges are bubbly.
- Let cool for 10-15 minutes before serving. It's delicious warm, perhaps with a scoop of vanilla ice cream.
Notes
Ensure the melted butter covers as much of the dry cake mix as possible to avoid powdery spots.