Peanut Butter Cup Dump Cake

Category: Treats That Make Everything Better

This luscious peanut butter cup dump cake pairs chocolate cake mix with instant chocolate pudding, made extra-rich with milk and studded throughout with chopped mini Reese’s cups. The cake is baked in a single dish, resulting in a moist, fudgy texture with pockets of melted peanut butter candy in every bite. It comes together quickly—just whisk, fold, and bake—making it a perfect no-fuss dessert for gatherings or family nights. Serve slightly warm for a gooey, comforting finish, optionally topped with whipped cream or extra chopped PB cups.

Lili Clark smiling at the camera.
Created By Lili Clark
Updated on Fri, 06 Nov 2026 17:04:58 GMT
Peanut Butter Cup Dump Cake Recipe Save
Peanut Butter Cup Dump Cake Recipe | lilicooks.com

Peanut Butter Cup Dump Cake is that effortless dessert you whip up when your house smells like chocolate and you want something gooey with almost no fuss. It is perfect for parties potlucks or just a quick family treat because you basically mix everything in one bowl and the result is always a hit.

The first time I tried this it was during a movie night with friends and everyone went back for seconds. Now we always argue over the crispy corner pieces.

Ingredients

  • Chocolate cake mix: choose a moist variety for rich crumb and double check the date for freshness
  • Chocolate instant pudding mix: adds extra moisture and fudgy texture make sure to get instant not cook and serve
  • Milk: brings everything together use whole milk for extra richness but any milk works
  • Mini peanut butter cups: chopped for nutty flavor and gooey pools of peanut butter inside try to use name brand for best taste and a mix of different peanut butter cup sizes adds fun variety

Step-by-Step Instructions

Preheat and Prep:
Set your oven to three hundred fifty degrees Fahrenheit and thoroughly grease a thirteen by nine inch baking dish so nothing sticks when serving
Prepare the Pudding Base:
In a large bowl add the chocolate pudding mix and milk whisk steadily for up to two minutes so the mix completely dissolves and the texture becomes silky without any lumps
Mix in the Cake Mix:
Pour the dry chocolate cake mix into your pudding mixture stir until it is well integrated and no dry pockets remain the batter will look thick almost like brownie batter
Fold in Candy Goodness:
Chop the mini peanut butter cups into halves or quarters and gently fold them through the batter making sure every scoop will have a bit of that chocolate peanut butter surprise
Assemble and Spread:
Pour everything into your prepared dish use a spatula to smooth and get an even layer so it bakes uniformly
Bake:
Place the dish in the center rack of your oven and bake for twenty five minutes use a toothpick test towards the middle some melted chocolate may cling but you want moist crumbs no raw batter
Cool and Serve:
Let the cake cool for about five to ten minutes so it sets slightly then serve warm with extra peanut butter cups on top or a dollop of whipped cream if desired
Peanut Butter Cup Dump Cake Recipe
Peanut Butter Cup Dump Cake Recipe | lilicooks.com

I am obsessed with the melted peanut butter cups here because they get all warm and slightly gooey inside the cake and my family always fights for the biggest chunks. My favorite memory is my kid sneaking into the kitchen just for another corner piece before dinner.

Storage Tips

This cake stores easily so just cover the baking dish or transfer leftovers to an airtight container. It keeps fresh for up to four days at room temperature and reheats beautifully in the microwave for about fifteen seconds for that just baked warmth.

Ingredient Substitutions

If you run out of chocolate cake mix try brownie mix for a denser treat or use vanilla or yellow cake mix for a twist. Almond butter cups swap in nicely if you prefer or need a peanut allergy option. If you have lactose intolerance a good non dairy milk like oat or almond will do the trick.

Serving Suggestions

Scoop warm dump cake into bowls and top with vanilla ice cream for an over the top sundae. I also love letting guests drizzle extra melted peanut butter or chocolate sauce for an extra decadent dessert bar. Once at a Halloween party we added Halloween colored sprinkles for a festive look.

Peanut Butter Cup Dump Cake Recipe
Peanut Butter Cup Dump Cake Recipe | lilicooks.com

A Little History

Dump cakes shot up in popularity for their ease during mid twentieth century American gatherings. The classic chocolate and peanut butter combo is a true crowd pleaser and peanut butter cups are an American staple for a reason. This dessert honors the classic combination in the simplest form.

Recipe FAQs

→ What kind of cake mix works best?

Classic chocolate cake mix is ideal for a rich, chocolatey base, but dark chocolate or devil’s food mix also work well.

→ Can I use full-size Reese’s cups?

Yes, simply chop regular Reese’s cups into small pieces to ensure even distribution throughout the cake.

→ What milk is recommended?

Whole or 2% milk helps create a creamy, fudgy texture, but non-dairy alternatives can be used if desired.

→ How do I know when the cake is done?

The cake is ready when a toothpick inserted in the center comes out mostly clean, with some moist crumbs attached.

→ Can the cake be served cold?

It tastes best warm or at room temperature, but you can refrigerate leftovers and enjoy them chilled as well.

→ What toppings pair well?

Try whipped cream, a drizzle of chocolate sauce, a scoop of vanilla ice cream, or extra chopped peanut butter cups.

Peanut Butter Cup Dump Cake

Chocolate and peanut butter combine in a simple, indulgent treat topped with chopped Reese's cups.

Preparation Time
10 min
Cooking Time
25 min
Overall Time
35 min
Created By: Lili Clark

Category: Desserts

Skill Level: Beginner-Friendly

Cuisine Type: American

Output: 12 Serves

Dietary Options: Vegetarian

Ingredients

01 1 (15.25 oz) box chocolate cake mix
02 1 (3.4 oz) box chocolate instant pudding mix
03 1¾ cups milk (415 ml)
04 1 (8 oz) package mini Reese’s PB Cups, chopped

Steps

Step 01

Preheat your oven to 350 degrees Fahrenheit. Grease a 13×9 inch baking dish with non-stick spray for easy release.

Step 02

In a large mixing bowl, combine the milk and chocolate instant pudding mix. Whisk vigorously until smooth.

Step 03

Add the chocolate cake mix to the pudding mixture and stir until all ingredients are well combined. The batter will be thick.

Step 04

Gently fold in the chopped mini Reese’s PB Cups, ensuring they are evenly distributed throughout the batter.

Step 05

Pour the batter into the prepared baking dish, spreading it evenly with a spatula.

Step 06

Place the baking dish in the oven and bake for approximately 25 minutes, or until a toothpick inserted in the center comes out clean.

Step 07

Remove the cake from the oven and allow it to cool slightly before serving. Serve warm or at room temperature with garnish options like whipped cream or chopped PB Cups.

Allergy Information

Always check each ingredient for allergens, and consult a medical professional if unsure.
  • Peanuts
  • Milk
  • Gluten

Nutritional Information (per serving)

These details are shared for general guidance and don’t replace professional advice.
  • Calories: 280.5
  • Fats: 10.2 g
  • Carbohydrates: 42.8 g
  • Proteins: 3.8 g