Peanut Butter Cup Dump Cake

The Ultimate Fudgy Chocolate-Peanut Butter Dessert

If you are a chocolate lover, a peanut butter fanatic, or simply someone who loves quick and indulgent desserts, this Peanut Butter Cup Dump Cake is going to be your new go-to. Despite having only four ingredients, it delivers a rich, decadent flavor with a moist, fudgy texture that tastes like it came straight from a bakery. Each bite is studded with sweet peanut butter cups, giving it an irresistible combination of chocolate and peanut butter that melts in your mouth.

Best of all, this recipe is incredibly simple: no complicated steps, no mixing bowls full of ingredients, no fancy techniques. Just “dump,” stir, and bake. It’s perfect for weeknight dinners, last-minute celebrations, potlucks, birthday parties, or whenever you crave a rich, chocolatey dessert that comes together in under 30 minutes.

Ingredients

1 box (15.25 oz) chocolate cake mix
1 box (3.4 oz) chocolate instant pudding mix
¾ cup milk
1 package (8 oz) mini peanut butter cups (such as Reese’s), chopped

Optional toppings: whipped cream, vanilla ice cream, chocolate drizzle, extra peanut butter cups

Recipe Overview

Prep Time: 5 minutes
Cook Time: 25 minutes
Total Time: 30 minutes
Servings: 20
Difficulty Level: Easy

Step-by-Step Instructions

Step 1: Preheat the Oven and Prepare the Pan

Preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish with nonstick spray, butter, or cooking spray. This ensures the cake won’t stick and makes cleanup easy.

Step 2: Combine the Base Ingredients

In a large mixing bowl, combine the chocolate cake mix, chocolate instant pudding mix, and milk. Stir until fully combined. The batter will be thick, almost like brownie batter, which is exactly what gives this cake its moist and fudgy texture.

Pro Tip: Don’t overmix. Stir just until everything is incorporated to prevent the cake from becoming dense or tough.

Step 3: Fold in the Peanut Butter Cups

Add the chopped mini peanut butter cups to the batter. Gently fold them in so that they are evenly distributed throughout the cake. Each slice will have delicious pockets of peanut butter cups that melt slightly while baking.

Tip: If your peanut butter cups are soft or sticky, chill them in the refrigerator for a few minutes before chopping to make handling easier.

Step 4: Bake the Cake

Pour the thick batter into your prepared 9×13-inch pan and spread it evenly. Bake in the preheated oven for about 25 minutes.

Check for doneness by inserting a toothpick in the center — it should come out with moist crumbs, not wet batter. The cake is meant to be fudgy and slightly gooey, so don’t overbake.

Step 5: Cool and Serve

Allow the cake to cool for 10–15 minutes before cutting. Cooling helps the cake set slightly so that the slices hold together.

Serve warm for a gooey, melty dessert, or allow it to cool completely for a denser, brownie-like texture.

Serving Suggestions

Warm and Gooey: Serve with a scoop of vanilla ice cream and drizzle of chocolate syrup.
Layered Dessert: Crumble over whipped cream or pudding for a layered parfait-style treat.
Extra Indulgence: Sprinkle chopped peanut butter cups on top or drizzle melted peanut butter over slices.

This cake pairs beautifully with coffee, milk, or even a scoop of ice cream for a decadent dessert experience.

Tips for the Perfect Dump Cake

Use whole milk rather than skim for a richer, fudgier texture.
Avoid overmixing — it keeps the cake light and tender.
Chill peanut butter cups slightly before chopping to prevent sticking.
Add extra chocolate chips or a swirl of peanut butter for more richness.
Store-bought mini peanut butter cups work best for even distribution, but chopped regular-size cups also work.

Storage & Shelf Life

Store in an airtight container at room temperature for up to 3 days.
Refrigerate for up to 5 days for extended freshness.
Freeze slices individually in plastic wrap or airtight containers for up to 2 months. Thaw at room temperature before serving.

Why You’ll Love This Recipe

Only 4 ingredients for a quick and easy dessert
Rich, fudgy, chocolatey texture with pockets of peanut butter goodness
Perfect for holidays, birthdays, or last-minute gatherings
Beginner-friendly, no complicated techniques or steps
Can be customized with extra toppings, layers, or swirls

This Peanut Butter Cup Dump Cake is proof that simplicity can be decadent. With minimal prep and ingredients, you get a dessert that looks and tastes like it took hours to make. It’s rich, chocolatey, peanut-buttery, and absolutely irresistible — perfect for chocoholics and peanut butter lovers alike.

If you want, I can also create a layered Peanut Butter Cup Dump Cake with frosting and ganache that looks like it came from a bakery, complete with tips for making it extra fancy.