Reese's Peanut Butter Cup Earthquake Cake
This gooey, over-the-top cake combines chocolate fudge cake, swirls of peanut butter cream cheese, and melty Reese's cups in a chaotic, delicious masterpiece. It's a low-effort, high-reward dessert that always steals the spotlight.
Prep Time 15 minutes mins
Cook Time 40 minutes mins
Total Time 55 minutes mins
- 1 box chocolate fudge cake mix plus ingredients listed on the box: eggs, oil, water
- 8 oz cream cheese softened
- ½ cup unsalted butter melted
- 3½ cups powdered sugar
- 1 teaspoon vanilla extract
- 1 cup creamy peanut butter
- 1½ cups chopped Reese’s Peanut Butter Cups plus extra for topping
- ½ cup mini chocolate chips
- Optional: pinch of salt if your peanut butter is unsalted
Grease a 9x13-inch pan and preheat your oven to 350°F (175°C). Prepare the chocolate cake mix according to box instructions and pour it into the pan.
In a separate bowl, beat the cream cheese until smooth. Add melted butter, vanilla, and peanut butter, and mix well. Slowly beat in the powdered sugar until thick and creamy.
Dollop the peanut butter mixture over the cake batter. Use a knife to swirl it lightly through—don’t overdo it. You want pockets of cream cheese in the final bake.
Scatter the chopped Reese’s and mini chocolate chips all over the top. Add a few extra dollops of cream cheese mixture if there’s any left.
Bake for 35–45 minutes. The cake is done when the edges are set and the center still has a little jiggle. It will crack and bubble as it bakes—don’t worry, that’s the signature earthquake look.
Let cool for at least 20 minutes before slicing. Serve warm for gooey texture or chill for a fudgier bite.