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Reese’s Peanut Butter Earthquake Cake

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Reese’s Peanut Butter Earthquake Cake is a gooey, decadent dessert layered with chocolate cake, melty peanut butter cups, swirled cream cheese frosting, and a peanut butter drizzle—perfect for chocolate-peanut butter lovers.

  • Total Time: 65 minutes
  • Yield: 12–16 squares

Ingredients

  • 1 box devil’s food or chocolate cake mix
  • 3 large eggs
  • 1/2 cup vegetable oil
  • 1 cup water or milk
  • 8 oz cream cheese, softened
  • 1/2 cup unsalted butter, softened
  • 2 cups powdered sugar
  • 1 tsp vanilla extract
  • 1 1/2 cups mini Reese’s peanut butter cups, chopped
  • 1/4 cup smooth peanut butter, warmed for drizzling

Instructions

  1. Preheat oven to 350°F (175°C). Grease a 9×13″ baking pan.
  2. Prepare cake batter by whisking cake mix, eggs, oil, and water (or milk) until smooth.
  3. Fold in most of the chopped Reese’s, reserving some for topping.
  4. Pour batter into the prepared pan.
  5. In a separate bowl, mix softened cream cheese, butter, powdered sugar, and vanilla until smooth.
  6. Dollop cream cheese mixture over the cake batter and gently swirl with a knife.
  7. Sprinkle reserved peanut butter cups over the top.
  8. Bake for 35–40 minutes, or until set at edges but slightly gooey in the center.
  9. Drizzle warm peanut butter over the cake while still warm.
  10. Cool slightly before slicing and serving.

Notes

  • Drizzle melted chocolate with peanut butter for extra richness.
  • Use white or dark chocolate Reese’s for variation.
  • Top with chopped peanuts or pretzels for crunch.
  • Replace swirl with cream cheese frosting for structure.
  • Author: liinaa
  • Prep Time: 15 minutes
  • Cook Time: 40 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Nutrition

  • Serving Size: 1 square
  • Calories: 420
  • Sugar: 34g
  • Sodium: 320mg
  • Fat: 24g
  • Saturated Fat: 11g
  • Unsaturated Fat: 11g
  • Trans Fat: 0g
  • Carbohydrates: 45g
  • Fiber: 2g
  • Protein: 5g
  • Cholesterol: 65mg