You know those days when you need a rich, chocolatey dessert but don’t have hours to spend in the kitchen? That’s where my Peanut Butter Cup Dump Cake comes in. I first made this on a chaotic weeknight when my kids begged for something sweet—talk about a lifesaver! It’s ridiculously easy (just dump, mix, bake), but tastes like you slaved over it. The magic combo of chocolate cake and gooey peanut butter cups makes it impossible to resist. Now it’s our go-to for potlucks, birthdays, or let’s be honest—just because it’s Tuesday.
Why You’ll Love This Peanut Butter Cup Dump Cake
Let me tell you exactly why this dessert will become your new best friend:
- Five minutes of prep – Seriously, just dump and stir! No fancy techniques or waiting around
- That magical peanut butter-chocolate combo – Every bite has pockets of melty peanut butter cups
- Foolproof baking – Even my most kitchen-challenged friends can’t mess this one up
- Always a crowd-pleaser – Kids go wild for it, adults pretend to be sophisticated while sneaking seconds
- Emergency dessert ready – Unexpected guests? Boom. Cake’s ready before they finish their coffee
Trust me, once you try this method, you’ll never go back to complicated dessert recipes again!

Ingredients for Peanut Butter Cup Dump Cake
Here’s the beautiful part – you only need four simple ingredients to make magic happen:
- 1 box (15.25 oz) chocolate cake mix – I always grab devil’s food for extra richness, but any chocolate variety works
- 1 box (3.4 oz) instant chocolate pudding mix – This is the secret weapon that makes the cake ultra-moist
- 1¾ cups milk – Whole milk gives the best texture, but I’ve used 2% in a pinch
- 1 package (8 oz) mini peanut butter cups, roughly chopped – Don’t skip the chopping! Smaller pieces mean peanut butter in every bite
See? I told you it was simple. Now let’s make some magic!
Equipment You’ll Need
Grab these basics from your kitchen – I promise you probably already have them:
- 13×9-inch baking dish – My trusty glass one works perfectly
- Large mixing bowl – Big enough to handle all that chocolatey goodness
- Whisk – Or a fork in a pinch, but a whisk blends the pudding smoother
- Spatula – For scraping every last bit of batter into the pan
That’s it! No fancy gadgets required for this easy-peasy dessert.
How to Make Peanut Butter Cup Dump Cake
Okay, let’s get baking! This is where the magic happens – and I promise it’s easier than you think. Follow these simple steps, and you’ll have a warm, gooey peanut butter chocolate masterpiece in no time.
Step 1: Prep the Baking Dish
First things first – grab that 13×9-inch pan and give it a good spritz with non-stick spray. I learned the hard way that skipping this step leads to sad, stuck-on cake!
Step 2: Mix Pudding and Milk
Now, whisk together the chocolate pudding mix and milk until it’s completely smooth. No lumps allowed! This creates that rich, velvety base that makes this cake so special.
Step 3: Add Cake Mix and Peanut Butter Cups
Here comes the fun part! Stir in the chocolate cake mix until just combined – don’t overmix! Then gently fold in those chopped peanut butter cups. Pro tip: save a handful to sprinkle on top before baking for extra peanut butter goodness.
Step 4: Bake and Cool
Pop it in a 350°F oven for about 25 minutes. You’ll know it’s done when a toothpick comes out with just a few moist crumbs. Let it cool slightly – I know it’s hard to wait, but trust me, that warm-but-not-scalding temperature is perfect. Especially with a scoop of vanilla ice cream melting on top!
Tips for the Best Peanut Butter Cup Dump Cake
After making this cake more times than I can count (okay fine, I’ve lost track because I make it weekly), here are my golden rules:
- Don’t overbake! Pull it out when the edges look set but the center still jiggles slightly – it keeps that fudgy texture
- Serve warm with vanilla ice cream – the melty peanut butter cups and cold ice cream is heaven
- Chop those peanut butter cups small – bigger chunks sink to the bottom (learned that the messy way!)
- Let it rest 10 minutes before digging in – patience rewards you with cleaner slices
Follow these, and you’ll have people begging for your “secret” recipe!
Variations for Peanut Butter Cup Dump Cake
Oh, the possibilities! While I’m obsessed with the classic version, sometimes I like to mix things up:
- Try yellow cake mix for a buttery twist – it lets the peanut butter cups really shine
- Swirl in peanut butter before baking – just dollop and drag a knife through for marbled goodness
- Swap peanut butter cups for Reese’s Pieces or chopped peanut butter cookies
- Add chocolate chips for extra melty pockets – because more chocolate is always better
The best part? You really can’t mess this up – every variation turns out delicious!
Serving and Storing Peanut Butter Cup Dump Cake
Here’s the best way to enjoy this beauty – serve it warm with a big scoop of vanilla ice cream melting over the top. The contrast of hot cake and cold ice cream with those melty peanut butter cups? Absolute perfection! If you somehow have leftovers (rare in my house), just pop them in an airtight container. They’ll stay delicious at room temperature for about 3 days – though I doubt they’ll last that long!
Peanut Butter Cup Dump Cake FAQs
Q1. Can I use regular-sized peanut butter cups instead of minis?
Absolutely! Just chop them into smaller pieces first. I like quartering the regular ones – they distribute better throughout the cake. My neighbor once made it with whole cups on top (no chopping at all!), and while it looked gorgeous, most of the peanut butter sank to the bottom. Live and learn!
Q2. What if I don’t have chocolate pudding mix?
No worries! The cake will still work without it, though the texture won’t be quite as rich. You could substitute with an extra ½ cup of milk or even some sour cream for moisture. But honestly? The pudding mix is worth grabbing—it makes such a difference in that fudgy crumb.
Q3. Can I make this ahead of time?
You bet! I often mix the dry ingredients the night before, then just add the wet ingredients when I’m ready to bake. The baked cake keeps well for 3 days, though the peanut butter cups lose some of their gooey magic after day one. Pro tip: Warm leftovers in the microwave for 15 seconds to revive that just-baked texture.
Nutritional Information
Here’s the scoop on what you’re biting into (per serving): about 280 calories of pure peanut butter-chocolate joy. But heads up – nutrition varies by ingredients! My neighbor’s version with extra peanut butter cups? Let’s just call that the “happy accident” variation.

Share Your Peanut Butter Cup Dump Cake
Made this? I’d love to hear how it turned out! Leave a comment below or tag me on social – nothing makes me happier than seeing your peanut butter cup creations!
For more delicious dessert ideas, check out BestAllTop on Pinterest.
Print
Irresistible Peanut Butter Cup Dump Cake Recipe
- Total Time: 35 minutes
- Yield: 12-15 slices 1x
- Diet: Vegetarian
Description
A quick and easy chocolate peanut butter cup dump cake that’s rich, decadent, and perfect for any occasion.
Ingredients
- 1 box (15.25 oz) chocolate cake mix
- 1 box (3.4 oz) instant chocolate pudding mix
- 1¾ cups milk
- 1 package (8 oz) mini peanut butter cups, roughly chopped
Instructions
- Preheat your oven to 350°F (180°C). Spray a 13 x 9 inch baking dish with non-stick spray and set aside.
- In a large bowl, whisk together the instant pudding mix and the milk until smooth and thoroughly combined.
- Stir in the chocolate cake mix until the batter is thick and well blended. Fold in the chopped mini peanut butter cups evenly throughout the batter.
- Pour the batter into the prepared baking dish and spread it out evenly. Bake for 25 minutes, or until a skewer inserted into the center comes out clean with just a few moist crumbs remaining.
- Allow the cake to cool slightly before serving. This treat is especially delicious when served warm, paired with a scoop of vanilla ice cream.
Notes
- Serve warm with vanilla ice cream for best results.
- Store leftovers in an airtight container at room temperature for up to 3 days.
- Prep Time: 10 minutes
- Cook Time: 25 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice
- Calories: 280
- Sugar: 22g
- Sodium: 320mg
- Fat: 10g
- Saturated Fat: 4g
- Unsaturated Fat: 5g
- Trans Fat: 0g
- Carbohydrates: 42g
- Fiber: 2g
- Protein: 4g
- Cholesterol: 5mg