Reese’s Peanut Butter Earthquake Cake – Don’t Lose This!!!
You know those desserts that disappear before they even cool completely? This Reese’s Peanut Butter Earthquake Cake is one of those. With a rich chocolate cake base, a gooey peanut butter cream cheese swirl, and a generous sprinkle of Reese’s cups and chocolate chips, this cake isn’t just decadent—it’s downright legendary.
It’s easy to make (yes, we’re using a boxed cake mix), impossible to forget, and perfect for potlucks, parties, or peanut butter fanatics who don’t play around when it comes to dessert.
Why I Love This Recipe
This cake is indulgent in all the best ways. The “earthquake” part comes from the way the peanut butter mixture bubbles up and cracks through the chocolate cake while baking, creating that signature lava-like effect. It’s rich, messy, ooey-gooey, and completely worth every calorie.
Plus, it’s almost foolproof. The base is a cake mix, and the filling takes just a few pantry staples. But the final result tastes like you spent hours baking from scratch.
Ingredients You’ll Need
For the Cake:
- 1 box chocolate cake mix (plus ingredients listed on the box)
- ½ cup butter, melted
- 8 oz cream cheese, softened
- ½ cup peanut butter
- ½ tsp vanilla extract
- 4 cups powdered sugar
Toppings:
- ½ cup semi-sweet chocolate chips
- 1 cup mini Reese’s Peanut Butter Cups, halved
Ingredient Notes & Swaps
- Peanut butter: Use creamy for a smooth swirl, or crunchy for a little texture.
- Chocolate cake mix: Devil’s Food, chocolate fudge, or even triple chocolate all work great.
- Mix-ins: Feel free to add chopped pretzels or peanut butter chips for an extra layer of fun.
How to Make Reese’s Peanut Butter Earthquake Cake
Step 1: Preheat & Prep
Preheat your oven to 350°F (175°C).
Grease a 9×13-inch glass baking dish and set aside.
Step 2: Prepare the Cake Batter
Mix the chocolate cake batter according to package directions.
Pour it evenly into the prepared baking dish.
Step 3: Make the Peanut Butter Swirl
In a large bowl, beat the softened cream cheese and melted butter until smooth.
Add the peanut butter and vanilla extract, and beat until creamy.
Mix in the powdered sugar, 1 cup at a time, until fluffy.
Step 4: Swirl & Top
Spoon dollops of the peanut butter mixture over the cake batter.
Do not mix it in—let it sit right on top. It’ll naturally swirl as it bakes.
Sprinkle the top with chocolate chips and halved Reese’s cups.
Step 5: Bake
Bake for 45–55 minutes, or until the center is just set and a tester comes out with moist crumbs.
Let cool slightly before serving.
Tips for Success
- Don’t overmix the layers—let the magic happen in the oven.
- Use room temp cream cheese to make the swirl extra smooth.
- Want it gooier? Pull it at 45 minutes and serve warm with a spoon.
- Add ice cream and make it a full-blown sundae!
Serving Suggestions
This cake is epic warm, but it’s also fantastic chilled. Serve it:
- With a scoop of vanilla ice cream
- With a drizzle of extra melted peanut butter
- As the star of your next birthday or game day spread
Pair it with some other rich, chocolatey favorites:
- 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
- These Chocolate Chip Cookie Bites Are My Favorite Little Treat to Bake Anytime
- 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
Storage & Leftovers
- Room temp: Store tightly covered for up to 2 days.
- Fridge: Keeps well for 5 days. Bring to room temp or gently warm before serving.
- Freezer: Freeze in squares for up to 2 months. Thaw overnight in the fridge.
Final Thoughts
This Reese’s Peanut Butter Earthquake Cake is the kind of dessert you make once and suddenly everyone’s asking for the recipe. It’s indulgent, gooey, messy in the best way, and absolutely loaded with chocolate and peanut butter flavor.
If you make it, I’d love to see your results! Tag @chefmaniac, leave a comment, and don’t forget to follow for more desserts that are totally worth the sugar rush.
Leave a Reply