Peanut Butter Cup Dump Cake

Peanut Butter Cup Dump Cake is the kind of dessert that feels almost unfairly easy for how rich and satisfying it turns out. If you love the classic combination of chocolate and peanut butter, this recipe is basically a dream baked into one gooey, scoopable pan. With chocolate cake mix, melted peanut butter, butter, and plenty of mini peanut butter cups, it comes together fast and bakes into a warm dessert that tastes like a cross between cake, brownie, and candy bar.

This is exactly the sort of recipe I love when I need a dessert that delivers big on comfort and indulgence without requiring a complicated ingredient list or a lot of steps. It is cozy, messy in the best way, and absolutely made for serving warm with a scoop of vanilla ice cream. Whether you are making it for a family movie night, a potluck, or a weekend sweet craving, this one is a guaranteed crowd-pleaser.

Why I Love This Recipe

I love this recipe because it leans all the way into what makes dump cakes so great: convenience, rich flavor, and that irresistible warm-from-the-oven texture. The chocolate cake mix creates the base, the melted peanut butter adds creamy richness, and the mini peanut butter cups melt into pockets of sweet, nutty chocolate goodness throughout the pan.

It is also one of those desserts that feels extra fun. There is something about seeing candy folded into a warm cake that instantly makes it more exciting. It is casual and easy, but still dramatic enough to get everyone’s attention when you bring it to the table. If you are a peanut butter dessert fan, this belongs right alongside The Best Peanut Butter Brownies I’ve Ever Made—and I’ve Made a Lot.

Ingredients

• 1 box (15.25 ounces) chocolate cake mix
• 1 cup milk, or as directed on the cake mix box
• 1/2 cup creamy peanut butter, melted
• 1/2 cup butter, melted
• 1 bag (12 ounces) mini Reese’s Peanut Butter Cups, halved
• 1/2 cup semi-sweet chocolate chips, optional

Swaps and Notes

Using milk instead of water gives the cake a richer texture and deeper flavor, which works especially well in a dessert this indulgent. It is a small change that makes a noticeable difference.

Creamy peanut butter is best for drizzling because it melts smoothly and spreads more evenly through the batter. If you only have natural peanut butter, stir it very well first so the texture stays consistent.

The mini peanut butter cups are the real star here, but chocolate chips are a nice add-in if you want even more richness. You can also add peanut butter chips if you really want to push the peanut butter flavor even further.

This dessert is meant to be gooey, so do not expect a traditional fluffy cake texture. It is more like a warm dessert bake with molten candy pockets throughout, which is exactly what makes it so good.

How to Make Peanut Butter Cup Dump Cake

1. Preheat your oven to 350°F (175°C) and lightly grease a 9×13-inch baking dish.
2. In a large mixing bowl, prepare the chocolate cake mix according to the package directions, using milk in place of water for a richer result.
3. Pour the prepared cake batter into the greased baking dish.
4. Drizzle the melted peanut butter evenly over the cake batter.
5. Sprinkle the halved mini Reese’s Peanut Butter Cups over the top.
6. Add the semi-sweet chocolate chips if using.
7. Drizzle the melted butter over the entire dish.
8. Bake for 30 to 35 minutes, until the edges are set and the center is gooey and slightly bubbly.
9. Let the cake cool for about 10 minutes before serving.
10. Serve warm on its own or with vanilla ice cream, whipped cream, or a drizzle of hot fudge.

Tips for Success

Do not overbake this dessert. The center should still look a little soft and gooey when you pull it from the oven. That is what gives it the signature dump cake texture and keeps the peanut butter cups melty.

Halving the mini peanut butter cups helps them distribute more evenly throughout the cake. You get more peanut butter in every bite instead of a few larger candy pockets concentrated in one area.

Letting the cake rest for 10 minutes before serving helps it settle just enough to scoop while still staying warm and delicious. Straight from the oven it can be very loose, but after a brief rest it becomes the perfect spoonable dessert.

For another rich chocolate-peanut butter dessert idea, These No-Bake Peanut Butter Oatmeal Bars Are My Favorite Snack to Keep on Hand are worth saving too.

Serving Suggestions and Pairings

This dessert is best served warm, ideally with something cool and creamy to balance all that chocolate-peanut butter richness. Vanilla ice cream is the obvious favorite, but whipped cream or even a little hot fudge drizzle works beautifully too.

If you are putting together a dessert spread for serious sweet tooths, pair it with This Brownie Batter Dip Is My Favorite No-Bake Dessert for Instant Chocolate Cravings and This Edible Cookie Dough Is My Favorite No-Bake Treat for Late-Night Cravings. That gives you a fun mix of baked and no-bake chocolate-heavy treats.

For something creamy and chilled to contrast the warm dump cake, This No-Bake Oreo Cream Pie Is My Favorite Quick Dessert Hack makes a great companion dessert.

Nutritional Information Per Serving

Estimated per serving, based on 12 slices:

• Calories: 350 kcal
• Carbohydrates: 42g
• Protein: 5g
• Fat: 19g
• Saturated Fat: 9g
• Sugar: 28g
• Sodium: 280mg

These values are approximate and may vary depending on the cake mix and candy used.

Storage and Leftover Tips

Store leftovers covered in the refrigerator for up to 4 days. Because this cake is so gooey and rich, it reheats very well in the microwave for a quick dessert later.

Warm individual portions in short intervals until just heated through. A fresh scoop of ice cream on top makes leftovers taste just as exciting as the first serving.

You can also serve it chilled if you like a denser, fudgier texture, though warm is definitely the best way to enjoy the melty peanut butter cup effect.

More Recipes You Will Love

If you love rich, easy desserts, here are a few more Chef Maniac favorites to save:

• The Best Peanut Butter Brownies I’ve Ever Made—and I’ve Made a Lot
• This Brownie Batter Dip Is My Favorite No-Bake Dessert for Instant Chocolate Cravings
• This No-Bake Oreo Cream Pie Is My Favorite Quick Dessert Hack
• These No-Bake Peanut Butter Oatmeal Bars Are My Favorite Snack to Keep on Hand
• This Edible Cookie Dough Is My Favorite No-Bake Treat for Late-Night Cravings

Final Thoughts

Peanut Butter Cup Dump Cake is one of those desserts that feels tailor-made for anyone who believes chocolate and peanut butter are the ultimate duo. It is rich, gooey, easy to make, and guaranteed to disappear quickly once people get a taste.

This is the kind of recipe I love sharing because it is low effort, high reward, and completely crowd-friendly. It is the perfect excuse to keep a box of cake mix and a bag of peanut butter cups around just in case dessert needs to happen fast.