Easy Peanut Butter Cup Dump Cake – Rich, Fudgy & Ready in 30 Minutes

Sometimes you just need a dessert that comes together quickly, tastes incredibly indulgent, and doesn’t leave you with a sink full of dishes. This Peanut Butter Cup Dump Cake checks every box. With just four ingredients, this easy chocolate dessert combines a rich chocolate cake mix, creamy instant chocolate pudding, milk, and chopped mini peanut butter cups for a fudgy, chocolate-packed treat. It’s an ideal easy dump cake recipe, quick chocolate dessert, peanut butter cup dessert, or 30-minute dessert recipe for busy weeknights, last-minute gatherings, birthdays, potlucks, and family celebrations. The texture is wonderfully moist and fudgy, while pockets of melted peanut butter cups add a deliciously rich peanut butter flavor throughout every bite. Serve this Peanut Butter Cup Dump Cake warm with vanilla ice cream for an effortless dessert everyone will want seconds of.

Why You’ll Love This Recipe

There’s a reason dump cakes have become such a popular shortcut dessert. They deliver impressive flavor without requiring complicated baking techniques, specialty equipment, or hours in the kitchen.

This Peanut Butter Cup Dump Cake takes that simplicity one step further with just four ingredients.

Only Four Ingredients

You don’t need a long grocery list to make something delicious.

The recipe uses:

• Chocolate cake mix
• Instant chocolate pudding mix
• Milk
• Mini peanut butter cups

That’s it.

The combination creates a rich, chocolatey cake with a wonderfully fudgy texture and plenty of peanut butter flavor.

No Mixer Required

Forget dragging out your stand mixer or electric hand mixer.

Everything comes together in one large mixing bowl with a whisk or wooden spoon. That makes this a particularly convenient dessert when you want something homemade without a lot of cleanup.

Ready in 30 Minutes

With just 5 minutes of preparation and 25 minutes of baking time, this Peanut Butter Cup Dump Cake is perfect when a dessert craving strikes unexpectedly.

It’s also a great option when you need something sweet for guests but don’t have much time to spend in the kitchen.

Chocolate and Peanut Butter Are Always a Winner

Chocolate and peanut butter are a classic combination for good reason.

The chocolate cake provides a deep, rich base, while chopped peanut butter cups melt into the batter and create little pockets of peanut butter throughout the cake.

The result is rich without requiring a complicated frosting or filling.

Budget-Friendly Ingredients

There are no unusual ingredients here.

Chocolate cake mix, instant pudding, milk, and peanut butter cups are all easy to find, making this a practical dessert for everyday baking.

Easy to Customize

Once you’ve made the basic recipe, there are plenty of ways to put your own spin on it.

You can try different chocolate cake mixes, use chopped chocolate bars, add chocolate chips, or change up the toppings when serving.

Ingredients Breakdown

One of the best things about this Peanut Butter Cup Dump Cake is how short the ingredient list is.

Chocolate Cake Mix

You’ll need 1 box (15.25 oz) chocolate cake mix.

A standard chocolate cake mix works perfectly. Any brand can be used, so choose your favorite or whatever you already have in your pantry.

The cake mix provides the chocolate base and helps make this dessert especially convenient.

Instant Chocolate Pudding Mix

Use 1 box (3.4 oz) instant chocolate pudding mix.

The pudding mix is an important part of the recipe because it contributes to the moist, fudgy texture that makes this cake different from an ordinary chocolate cake.

Milk

The recipe calls for 1¾ cups milk.

Whole milk works especially well, but the recipe notes that you can use whatever milk you have available.

The milk combines with the pudding mix and cake mix to create the thick batter.

Mini Peanut Butter Cups

You’ll need 1 package (8 oz) mini peanut butter cups, roughly chopped.

Roughly chopping them into different-sized pieces is ideal because it creates a variety of peanut butter pockets throughout the finished cake.

You can use Reese’s or another brand of peanut butter cups.

Tools & Equipment Needed

You don’t need much equipment for this recipe.

Gather:

• A large mixing bowl
• A whisk or wooden spoon
• A 13 x 9 inch baking dish
• A knife for chopping the peanut butter cups
• Non-stick spray

That’s all.

No stand mixer, electric mixer, or complicated baking equipment is necessary.

Step-by-Step Instructions

This Peanut Butter Cup Dump Cake is designed to be simple. Once your ingredients are measured, the batter takes only a few minutes to prepare.

Step 1 – Preheat the Oven

Preheat your oven to 180°C (350°F).

Spray a 13 x 9 inch baking dish with non-stick spray and set it aside.

Preparing the dish before making the batter means you can transfer the mixture straight into the pan when it’s ready.

Step 2 – Mix the Pudding and Milk

In a large bowl, whisk together the 1¾ cups milk and instant chocolate pudding mix until well combined.

Make sure the pudding mix is incorporated into the milk before moving on to the next step.

Step 3 – Add the Chocolate Cake Mix

Add the chocolate cake mix to the bowl.

Stir until everything is well blended.

The mixture will be quite thick.

Don’t be concerned if it looks much thicker than traditional cake batter. According to the recipe, this thick consistency is exactly what you want.

Step 4 – Fold in the Peanut Butter Cups

Roughly chop the 8 oz package of mini peanut butter cups.

Add them to the thick chocolate batter and gently fold them through.

Try to distribute the pieces throughout the batter so you get peanut butter cups in different areas of the finished cake.

Step 5 – Transfer to the Baking Dish

Pour the mixture into the prepared 13 x 9 inch baking dish.

Spread the batter evenly across the dish.

Because the batter is thick, use the back of a spoon or spatula to help distribute it evenly if needed.

Step 6 – Bake

Place the baking dish in the preheated oven.

Bake for 25 minutes, or until a skewer inserted into the centre comes out clean with just a few moist crumbs.

The original recipe notes that ovens vary, so if you want to monitor the cake closely, you can start checking around the 20-minute mark.

Step 7 – Cool Slightly and Serve

Allow the cake to cool slightly before serving.

For the ultimate dessert experience, serve it while it’s still warm with vanilla ice cream.

The combination of warm chocolate cake, melted peanut butter cup pieces, and cool vanilla ice cream makes this an especially comforting dessert.

Tips & Variations

A few simple techniques will help you get the best results from your Peanut Butter Cup Dump Cake.

Don’t Overmix

Once the ingredients are combined, stop stirring.

Overmixing can make the cake tough, so mix only until everything is well blended.

Don’t Worry About the Thick Batter

The batter is supposed to be very thick.

It won’t have the loose consistency you might expect from a traditional cake batter.

That thick texture is part of what gives the finished dessert its fudgy quality.

Roughly Chop the Peanut Butter Cups

Don’t worry about making perfectly uniform pieces.

Different-sized pieces are actually ideal because they create varied pockets of melted peanut butter throughout the cake.

Start Checking Early

The recipe calls for 25 minutes of baking, but ovens can vary.

Start checking around 20 minutes if you want to make sure you don’t overbake it.

The cake is ready when a skewer inserted into the centre comes out clean with just a few moist crumbs.

Serve It Warm

This dessert is particularly delicious while warm.

Add vanilla ice cream, whipped cream, or a drizzle of hot fudge sauce for an extra-indulgent serving.

Add a Sweet-Salty Finish

If you enjoy the contrast between sweet and salty flavors, a small sprinkle of sea salt over the finished cake can add another layer of flavor.

Flavor Profile

The flavor of this Peanut Butter Cup Dump Cake is centered around two classic dessert ingredients: chocolate and peanut butter.

The chocolate cake creates the dominant rich, fudgy base.

The instant chocolate pudding adds moisture and helps create a soft, dense texture.

Then the chopped peanut butter cups bring creamy peanut butter flavor and little bursts of chocolate throughout the cake.

Texture

The texture is one of the highlights.

Rather than being light and airy like a traditional sponge cake, this dessert has a denser, fudgier quality.

The peanut butter cups become soft and melty during baking, creating pockets of richness throughout the chocolate cake.

Best Serving Temperature

Although the cake can be enjoyed after cooling, serving it warm is particularly appealing.

The recipe specifically recommends serving it warm with vanilla ice cream, making it an excellent comfort-food dessert.

Nutritional Overview

The supplied recipe provides the following nutritional information per serving:

• Calories: 107 kcal
• Servings: 20 slices

The provided recipe does not include individual nutrition values for protein, carbohydrates, fat, fiber, sodium, or sugar, so those values should not be estimated here.

As always, nutritional values can vary depending on the specific brands of cake mix, pudding mix, milk, and peanut butter cups used.

Make-Ahead & Meal Prep Tips

This recipe is simple enough to prepare on short notice, but you can also plan ahead.

Prepare the Batter Ahead

The recipe notes that you can mix the batter and store it covered in the refrigerator for up to 24 hours before baking.

When you’re ready to bake, give the batter a quick stir before transferring it to the baking dish.

Bake Ahead

You can also bake the cake a day ahead.

Store it properly and reheat individual slices as needed.

This makes it useful for gatherings where you want to prepare dessert before guests arrive.

Make Individual Portions

Because the recipe yields 20 slices, it can easily be portioned after baking.

Individual slices can then be reheated when you’re ready to serve them.

Frequently Asked Questions

What is a dump cake?

A dump cake is a simple dessert designed to minimize preparation.

Instead of using complicated techniques such as creaming butter or carefully folding ingredients together, the ingredients are combined and baked.

Traditional dump cakes often use cake mix, fruit, and butter, while this chocolate version uses pudding and milk to create a rich, fudgy cake-like texture.

Can I use a different flavor of cake mix?

Yes.

The recipe notes that you can experiment with different cake mixes.

Yellow cake mix combined with chocolate pudding is one possible variation, while devil’s food cake mix can be used when you want an especially rich chocolate flavor.

Keep the same measurements when making these variations.

What if I don’t have instant pudding mix?

The recipe notes that you can leave out the pudding mix, but the liquid needs to be adjusted.

Use 1 cup of milk instead of 1¾ cups.

The resulting texture will be somewhat different, but it can still make a delicious dessert.

Can I use regular-sized peanut butter cups?

Yes.

Regular-sized peanut butter cups can be substituted for the mini variety.

Simply chop them into smaller pieces before folding them into the batter.

Can I make this cake ahead of time?

Yes.

You can mix the batter and refrigerate it, covered, for up to 24 hours before baking.

You can also bake the cake a day ahead and reheat slices when needed.

What can I serve with Peanut Butter Cup Dump Cake?

Vanilla ice cream is the classic choice and is specifically recommended with this recipe.

You can also serve it with:

• Whipped cream
• Hot fudge sauce
• A drizzle of peanut butter
• A sprinkle of sea salt

These additions can make an already indulgent dessert feel even more special.

Cooking Timeline

Step	Time
Prep	5 minutes
Cook	25 minutes
Total	30 minutes
Servings	20 slices
Oven Temperature	180°C / 350°F

The short 30-minute timeline makes this Peanut Butter Cup Dump Cake particularly useful when you need a dessert without a long preparation period.

Serving Suggestions

The simplest way to serve this cake is warm, with a scoop of vanilla ice cream.

The contrast between the warm, rich chocolate cake and cold ice cream makes each bite especially satisfying.

Classic

Serve a warm slice with vanilla ice cream.

Extra Chocolatey

Add a drizzle of hot fudge sauce before serving.

Creamy

Top with a spoonful of whipped cream.

Sweet and Salty

Finish with a light sprinkle of sea salt.

Peanut Butter Lovers

Add a drizzle of peanut butter over the warm cake for even more peanut butter flavor.

Recipe Variations

The basic recipe is already incredibly easy, but there are several ways to change the flavor.

Chocolate Bar Version

Swap the chopped peanut butter cups for chopped chocolate bars.

This keeps the chocolate-forward character while changing the filling throughout the cake.

Chocolate Chip Version

Add chocolate chips for additional chocolate texture.

This variation is ideal for anyone who wants an even more chocolate-heavy dessert.

Devil’s Food Version

Try a devil’s food cake mix for a richer chocolate variation.

Keep the same measurements as the original recipe.

Different Cake Mix Flavor

The recipe also notes that you can experiment with other cake mix flavors.

For example, yellow cake mix paired with chocolate pudding can create a different flavor profile while keeping the same simple preparation method.

Ingredient Spotlight: Peanut Butter Cups

The peanut butter cups are what give this dessert its signature character.

When roughly chopped and folded into the thick chocolate batter, they create pockets of chocolate and peanut butter throughout the cake.

Using different-sized pieces is especially useful because some pieces remain more substantial while others melt further into the surrounding batter.

You don’t need to make the pieces perfectly even.

In fact, the rustic approach works beautifully for a dump cake.

Pro Cooking Tips

Use a 13 x 9 Inch Dish

The recipe is specifically designed for a 13 x 9 inch baking dish.

Using the recommended pan helps maintain the intended thickness and baking time.

Grease the Dish Well

Spray the baking dish with non-stick spray before adding the batter.

This makes serving and cleanup easier.

Mix Just Until Combined

Once the cake mix has been incorporated and the batter is blended, stop stirring.

There’s no benefit to continuing to mix the batter.

Expect a Thick Mixture

A thick batter is completely normal for this recipe.

Don’t add extra milk simply because the mixture looks thicker than a traditional cake batter.

The recipe is designed this way.

Check the Centre

A skewer inserted into the centre should come out clean with just a few moist crumbs when the cake is ready.

Checking the centre is more useful than judging the cake only by its appearance.

Storage & Freezing Guide

One of the convenient things about this Peanut Butter Cup Dump Cake is that leftovers can be stored for later.

Refrigerator Storage

Store leftover cake covered in the refrigerator for up to 3 days.

When ready to enjoy, individual slices can be reheated in the microwave for 15–20 seconds.

Freezing

The cake can be frozen for up to 3 months.

For convenient portions:

1. Cut the cake into individual slices.
2. Wrap each slice in plastic wrap.
3. Place the wrapped slices in a freezer-safe container.
4. Freeze for up to 3 months.
5. Thaw in the refrigerator before reheating.

Freezing individual portions makes it easy to enjoy a slice whenever you want without thawing the entire cake.

Nutrition Estimate Table (Per Serving)

Based on the nutritional information supplied with the recipe:

Nutrient	Per Serving
Calories	107 kcal
Fat	Not provided
Carbohydrates	Not provided
Protein	Not provided
Fiber	Not provided
Sugar	Not provided
Sodium	Not provided

The supplied recipe specifically lists 107 calories per serving and does not provide the remaining nutrient values. Those values are therefore left as “Not provided” rather than estimated.

Expanded Conclusion

When you want a homemade dessert without complicated preparation, this Peanut Butter Cup Dump Cake is hard to beat.

It takes just four ingredients, requires no mixer, uses one mixing bowl, and goes from preparation to finished dessert in about 30 minutes.

The combination of chocolate cake mix, instant chocolate pudding, milk, and chopped peanut butter cups creates a dessert that feels much more indulgent than the amount of work involved suggests.

The thick batter bakes into a rich, fudgy chocolate cake, while the peanut butter cups create delicious pockets of chocolate and peanut butter throughout.

It’s the kind of recipe you can turn to when you need something sweet for a weeknight, family gathering, potluck, or last-minute dessert table.

And because the recipe is so simple, there’s plenty of room to make it your own. Try different cake mix flavors, swap in chopped chocolate bars, add chocolate chips, or choose your favorite toppings.

For the classic experience, though, keep it simple: serve a warm slice with vanilla ice cream and let the chocolate and peanut butter combination do all the work.

With minimal ingredients, minimal equipment, and minimal effort, this Peanut Butter Cup Dump Cake proves that an easy dessert can still deliver plenty of rich, comforting flavor.

Recipe at a Glance

Peanut Butter Cup Dump Cake

• Prep Time: 5 minutes
• Cook Time: 25 minutes
• Total Time: 30 minutes
• Servings: 20 slices
• Calories: 107 kcal per serving
• Cuisine: American
• Course: Dessert
• Difficulty: Easy
• Oven Temperature: 180°C (350°F)

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