Here’s a detailed recipe for a rich, gooey, and indulgent Reese’s Peanut Butter Earthquake Cake 🍫🥜 – a fun twist on the classic “earthquake cake” with peanut butter cups, chocolate cake, and a creamy peanut butter swirl.
🍫🥜 Reese’s Peanut Butter Earthquake Cake Recipe
Ingredients
For the Cake Base:
- 1 box chocolate cake mix (plus ingredients listed on the box: eggs, oil, water/milk)
- 1 cup sweetened shredded coconut (optional but traditional in earthquake cakes)
- 1 cup semi-sweet chocolate chips
- 1 cup chopped pecans or walnuts (optional for crunch)
- 1 cup mini Reese’s Peanut Butter Cups (halved)
For the Cream Cheese Peanut Butter Swirl:
- 8 oz cream cheese (softened)
- ½ cup unsalted butter (softened)
- 2 cups powdered sugar
- ½ cup creamy peanut butter
- 1 tsp vanilla extract
For Topping:
- ½ cup Reese’s Pieces or extra chopped mini Reese’s cups
- Drizzle of melted peanut butter or chocolate (optional)
Instructions
Step 1: Preheat & Prepare Pan
- Preheat oven to 175°C (350°F).
- Grease a 9×13-inch baking pan.
- Sprinkle the bottom with coconut, chocolate chips, and nuts (this forms the “earthquake” base).
Step 2: Prepare the Chocolate Cake Mix
- In a large bowl, prepare the cake batter according to the package directions.
- Pour the batter evenly over the coconut, chocolate chips, and nuts in the pan.
Step 3: Make the Cream Cheese Peanut Butter Swirl
- In a mixing bowl, beat together cream cheese and butter until smooth and creamy.
- Add powdered sugar, peanut butter, and vanilla. Mix until well combined and fluffy.
- Drop large spoonfuls of this mixture over the chocolate cake batter.
Step 4: Add Reese’s & Swirl
- Scatter halved Reese’s Peanut Butter Cups evenly over the top.
- Using a knife or skewer, gently swirl the cream cheese mixture into the cake batter (do not overmix – you want ribbons).
Step 5: Bake
- Bake for 40–50 minutes, until the center is set but still slightly gooey (it should jiggle a little – that’s the “earthquake” effect).
- Remove from oven and let cool for at least 20 minutes before cutting.
Step 6: Garnish & Serve
- Top with Reese’s Pieces or extra chopped peanut butter cups.
- Drizzle with melted chocolate or peanut butter for extra indulgence.
- Slice into squares and serve warm or at room temperature.
🍽️ Serving Suggestions
- Best enjoyed slightly warm with a scoop of vanilla ice cream.
- Store leftovers covered at room temp for 2 days or in the fridge for up to 5 days.
- Can be reheated in the microwave for a gooey texture.
🔥 Chef’s Tip: If you love extra peanut butter flavor, swirl in 2–3 tbsp of warmed peanut butter directly into the cake batter before baking.
Would you like me to also give you a from-scratch chocolate cake version (instead of box mix) for a fully homemade Reese’s Earthquake Cake?


