Name: Peanut Butter Cup Dump Cake
Prep time: 10 min
Cook time: 40 min
Total time: 50 min
Cuisine: American
Ingredients: 1 box chocolate cake mix; 1 box instant chocolate pudding mix (3.9 ounces); 1 cup whole milk; 1/2 cup unsalted butter, melted; 3/4 cup creamy peanut butter; 1 1/2 cups mini peanut butter cups, chopped; 1 cup semi-sweet chocolate chips; 1 can sweetened condensed milk (14 ounces); 1 teaspoon vanilla extract; 1/4 teaspoon salt

If you love rich chocolate desserts with gooey peanut butter in every bite, Peanut Butter Cup Dump Cake is the kind of treat that disappears fast. It bakes up with a soft, fudgy base, pockets of melted peanut butter cups, and a warm chocolate topping that feels like part brownie, part cake, and part candy bar dream.

This is the dessert to make when you want something easy but still impressive enough for birthdays, potlucks, game nights, or a cozy weekend treat at home. With simple pantry ingredients and a no-fuss method, you get big flavor without a long prep time.

Why Is Peanut Butter Cup Dump Cake So Irresistible?

Peanut Butter Cup Dump Cake works because every layer brings something special to the pan. The chocolate cake mix creates a deep cocoa base, the peanut butter cups melt into creamy pockets, and the topping turns glossy and rich as it bakes. It is one of those desserts that tastes even more indulgent than the effort it takes.

Ingredients for the Peanut Butter Cup Dump Cake

You only need a handful of simple ingredients to make this decadent dessert, and each one helps create that signature chocolate-peanut butter flavor.

Chocolate cake mix: The shortcut base that gives the cake its rich chocolate structure.
Instant chocolate pudding mix: Adds extra moisture and makes the texture softer and fudgier.
Whole milk: Helps blend the cake and pudding mixes into a smooth batter.
Unsalted butter, melted: Brings richness and helps the top bake up beautifully.
Creamy peanut butter: Swirled into the batter and on top for bold peanut butter flavor.
Mini peanut butter cups, chopped: Melt into the cake for candy-like bites throughout.
Semi-sweet chocolate chips: Add extra chocolate depth and pockets of melty texture.
Sweetened condensed milk: Poured over the top for a gooey, almost molten finish.
Vanilla extract: Rounds out the chocolate and peanut butter flavors.
Pinch of salt: Balances the sweetness and makes the flavors pop.

How To Make the Peanut Butter Cup Dump Cake

This dessert comes together in layers, and the beauty of it is that you do not need to overthink the process. Just mix, layer, swirl, and bake until warm, glossy, and irresistibly rich.

Step 1: Prep the Baking Dish

Preheat your oven to 350°F. Grease a 9×13-inch baking dish well so the cake lifts easily after baking.

Step 2: Mix the Batter

In a large bowl, combine the chocolate cake mix, instant chocolate pudding mix, milk, melted butter, vanilla extract, and a pinch of salt. Stir until smooth and thick.

Step 3: Spread the Base Layer

Pour the batter into the prepared baking dish and spread it into an even layer so every bite bakes evenly.

Step 4: Add the Peanut Butter and Candy

Warm the peanut butter for a few seconds until easily pourable, then spoon it over the batter. Scatter the chopped peanut butter cups and chocolate chips across the top.

Step 5: Finish with the Gooey Topping

Drizzle the sweetened condensed milk over the entire surface. Use a butter knife to make a few light swirls, but do not fully mix it in.

Step 6: Bake Until Rich and Set

Bake for 35 to 40 minutes, or until the edges are set and the center is still slightly soft. The top should look glossy with melted chocolate and peanut butter throughout.

Step 7: Cool Slightly and Serve

Let the cake rest for about 15 minutes before serving. This helps the layers settle while keeping the dessert warm and gooey.

The Best Ways to Serve and Store Peanut Butter Cup Dump Cake

Serve Peanut Butter Cup Dump Cake warm for the ultimate gooey texture. A scoop of vanilla ice cream or a drizzle of extra peanut butter on top makes it even better. It is also delicious with whipped cream if you want a lighter finish.

To store leftovers, cover the baking dish tightly or transfer slices to an airtight container. Refrigerate for up to 4 days. Reheat individual portions in the microwave for 15 to 20 seconds so the chocolate and peanut butter soften again.

Frequently Asked Questions

Can I use a different cake mix flavor?

Yes. Devil’s food cake mix is especially delicious here, but a classic chocolate cake mix works perfectly too.

Do I have to use mini peanut butter cups?

No. Regular peanut butter cups chopped into smaller pieces work just as well.

Can I make Peanut Butter Cup Dump Cake ahead of time?

Yes. Bake it a day in advance, cover, and refrigerate. Warm it slightly before serving for the best texture.

What can I serve with this cake?

Vanilla ice cream, whipped cream, chocolate syrup, or even a spoonful of warm peanut butter all pair beautifully.

Can I freeze leftovers?

Yes. Wrap portions well and freeze for up to 2 months. Thaw in the refrigerator and reheat before serving.

How do I know when it is done baking?

The edges should be set and the center should look soft but not raw. Since this dessert is meant to be gooey, avoid overbaking.

Want More Dump Cake and Chocolate Dessert Ideas?

If this Peanut Butter Cup Dump Cake is your kind of dessert, these sweet recipes are worth saving for later too:

Try Strawberry Cheesecake Dump Cake for a fruity, creamy twist on an easy baked dessert.
Make Bonnie’s Blue Ribbon Chocolate Dream Cake when you want another rich chocolate centerpiece.
Bake Nestlé’s House Toll Death by Chocolate Cake for an extra indulgent chocolate dessert everyone will remember.
Save Salted Caramel Kentucky Butter Cake for buttery cake lovers who want a caramel finish.
Keep Easy Cream Puff Cake on your list for a chilled dessert with bakery-style flavor.

📌 Save this Peanut Butter Cup Dump Cake to your Pinterest dessert board so you can come back to it whenever a chocolate and peanut butter craving hits.

When you make it, share how it turned out. Did you add extra peanut butter cups on top? Did you serve it warm with ice cream? Little changes can make this dessert feel brand new every time.

For even more sweet inspiration, browse my Life with Jam Pinterest recipe collection and save your next favorite dessert.