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Peanut Butter Cup Earthquake Cake

This Peanut Butter Cup Earthquake Cake recipe is made with Reese's, peanut butter frosting made from scratch as a rich filling, and chocolate cake mix – great dessert idea! Tastes just like the popular candy, but in the best cake.
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Prep Time 20 mins
Cook Time 40 mins
Total Time 1 hr
Course Dessert
Cuisine American
Servings 16 servings
Calories 463 kcal


  • 1 Box of Devil's food cake mix
  • 4 eggs
  • 1 cup milk
  • 1 tsp vanilla extract
  • 2 cups peanut butter
  • 2 sticks butter softened to room temperature
  • chocolate syrup
  • 1/4 cup milk
  • 2 cups powdered sugar
  • 30 chopped miniature peanut butter cups


  • In a large bowl, mix together cake mix, eggs, 1 cup milk, 1 cup of peanut butter, and 1 stick of butter. Spread mixture in a greased 9x13" baking dish.
  • With a mixer, mix together 1 stick butter, 1 cup peanut butter, and 1/4 cup milk. Slowly add in powdered sugar until frosting is mixed well.
  • Spoon half of the frosting mixture on top of the cake mix. Add 6-8 large squirts of chocolate syrup.Very gently swirl frosting and syrup into the cake mix. Don't completely mix. Make sure you get swirls into the edge of the cake pan.
  • Gently press in half of the chopped peanut butter cups.
  • Bake cake for 35-40 minutes at 350 degrees.Top cake with remaining frosting, more chocolate syrup, and remaining chopped peanut butter cups.

Nutrition Facts

Calories: 463kcalCarbohydrates: 50gProtein: 12gFat: 26gSaturated Fat: 6gPolyunsaturated Fat: 6gMonounsaturated Fat: 12gTrans Fat: 0.01gCholesterol: 44mgSodium: 432mgPotassium: 360mgFiber: 3gSugar: 36gVitamin A: 102IUVitamin C: 0.04mgCalcium: 96mgIron: 2mg
Keyword chocolate, earthquake cake, peanut butter cup
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