Reese’s Chocolate Peanut Butter Cup Earthquake Cake

The flavors of Reese’s Peanut Butter Cups are combined with a moist and gooey chocolate cake in this decadent and indulgent dessert. The cake is called a “earthquake cake” because it “quakes” during the baking process, resulting in beautiful patterns and textures. Here’s a tasty recipe for you to try:


  • 1 box (15.25 ounces) chocolate cake mix (plus the ingredients required on the box, usually eggs, oil, and water)
  • 1 cup creamy peanut butter
  • 1/2 cup unsalted butter, melted
  • 1 teaspoon vanilla extract
  • 1 cup powdered sugar
  • 1 cup Reese’s peanut butter cups, chopped (plus extra for garnish)
  • 1 cup semi-sweet chocolate chips
  • 1 cup sweetened shredded coconut (optional)
  • 1 cup chopped pecans or walnuts (optional)
  • Whipped cream or vanilla ice cream for serving (optional)


  1. Set your oven to the recommended temperature listed on the cake mix box, which is typically 350°F (175°C). A 9×13-inch baking pan should be greased.
  2. Prepare the Cake Batter: To make the chocolate cake batter, follow the directions on the cake mix box. This usually entails adding the necessary eggs, oil, and water to the cake mix in a mixing bowl and stirring until smooth.
  3. Spread out the prepared cake batter evenly in the greased baking dish.
  4. Put together the peanut butter filling: The creamy peanut butter, melted unsalted butter, vanilla extract, and powdered sugar should all be combined in a different mixing bowl. Stir thoroughly to achieve a smooth mixture.
  5. Drop spoonfuls of the peanut butter filling on top of the cake batter in the baking dish, spreading it out evenly to cover the cake.
  6. Add the Mix-ins: Sprinkle the chopped Reese’s peanut butter cups, semi-sweet chocolate chips, sweetened shredded coconut (if using), and chopped pecans or walnuts (if using) over the peanut butter filling layer.
  7. Create the Earthquake Effect: Use a butter knife or spatula to gently swirl the top layers (peanut butter filling, peanut butter cups, chocolate chips, coconut, and nuts) to give them a marbled and textured appearance. During baking, the cake will “quake” and produce lovely patterns.
  8. Bake the Reese’s Chocolate Peanut Butter Cup Earthquake Cake in the preheated oven for about 40-45 minutes or until a toothpick inserted into the center comes out with a few moist crumbs (not wet batter).
  9. Remove the cake from the oven and let it cool in the baking dish for a few minutes before serving.
  10. Serve the Earthquake Cake: Optionally, garnish the warm cake with extra chopped Reese’s peanut butter cups, whipped cream, or a scoop of vanilla ice cream for added indulgence.

Enjoy this delectable Reese’s Chocolate Peanut Butter Cup Earthquake Cake as a sweet treat. It’s an irresistible crowd-pleaser thanks to the combination of rich chocolate, creamy peanut butter, and the surprise of peanut butter cups!