Go Back
–+ servings
Peanut Butter Earthquake Cake

Irresistible Peanut Butter Earthquake Cake to Wow Your Guests

Enjoy a delightful collision of chocolate and peanut butter with this Peanut Butter Earthquake Cake.
Print Recipe Pin Recipe
Prep Time 20 minutes
Cook Time 40 minutes
Cooling Time 2 hours
Total Time 3 hours
Servings: 12 slices
Course: Desserts
Cuisine: American
Calories: 300
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Batter
  • 1 box Chocolate Cake Mix The foundation of the cake; simplifies preparation.
  • 1 cup Water Hydrates the batter; essential for mixing dry ingredients.
  • 1/2 cup Vegetable Oil Adds moisture and richness; can be substituted with melted butter.
  • 4 large Eggs Binds the ingredients and improves leavening; can use aquafaba as a vegan substitute.
For the Peanut Butter Swirl
  • 1 cup Peanut Butter The star flavor component; provides creaminess and richness.
  • 1/2 cup Powdered Sugar Sweetens the peanut butter swirl; optional if you prefer less sweetness.
  • 1/4 cup Melted Butter Adds depth to the peanut butter layer; can be replaced with coconut oil.
For the Toppings
  • 1 cup Reese’s Cups (chopped) Essential for that delightful chocolate-peanut flavor explosion.
  • 1/2 cup Chocolate Chips Boosts the chocolate flavor; use dark, milk, or even white chocolate varieties.

Equipment

  • 9x13-inch baking dish
  • large mixing bowl
  • Medium mixing bowl
  • Hand mixer
  • butter knife

Method
 

Step‑by‑Step Instructions for Peanut Butter Earthquake Cake
  1. Preheat your oven to 350°F (175°C) and generously grease a 9x13-inch baking dish.
  2. In a large mixing bowl, combine the chocolate cake mix, water, vegetable oil, and eggs. Use a hand mixer on medium speed for about 2 minutes until smooth.
  3. In a separate medium bowl, mix together the peanut butter, powdered sugar, and melted butter until smooth and creamy.
  4. Using a butter knife, gently swirl through the chocolate batter and peanut butter mix to create a marbled effect.
  5. Sprinkle the chopped Reese's Cups and chocolate chips evenly over the top of the cake batter.
  6. Place your baking dish in the preheated oven and bake for 35-40 minutes until the edges are set and the center is slightly jiggly.
  7. Once baked, allow the cake to cool in the dish for about 2 hours before slicing.

Nutrition

Serving: 1sliceCalories: 300kcalCarbohydrates: 40gProtein: 5gFat: 15gSaturated Fat: 5gPolyunsaturated Fat: 2gMonounsaturated Fat: 8gCholesterol: 40mgSodium: 200mgPotassium: 100mgFiber: 2gSugar: 20gVitamin A: 200IUCalcium: 30mgIron: 1mg

Notes

For an extra indulgent treat, serve warm with a scoop of vanilla ice cream.

Tried this recipe?

Let us know how it was!