Chocolate Peanut Butter Earthquake Cake Recipe

Decadent Chocolate Peanut Butter Earthquake Cake Recipe


  • 1 box chocolate fudge cake mix (plus ingredients required on the back of the box)
  • 1/2 cup butter
  • 8 oz cream cheese, softened
  • 1/2 cup creamy peanut butter
  • 1/2 teaspoon vanilla extract
  • 3 cups powdered sugar
  • 1/2 cup chocolate chips
  • 3/4 cup mini Reese’s cups


  1. Prepare the Cake Batter:
    • Preheat your oven to 350°F (175°C).
    • Prepare the chocolate cake mix according to the instructions on the box.
    • Grease a 9×13-inch baking pan and pour the prepared cake batter into the pan. Set aside.
  2. Prepare the Peanut Butter Mixture:
    • Melt the butter in a microwave-safe bowl.
    • In a medium mixing bowl, combine the melted butter, softened cream cheese, peanut butter, and vanilla extract. Stir until smooth and creamy.
    • Gradually add the powdered sugar to the mixture, stirring until fully combined.
  3. Assemble the Cake:
    • Drop spoonfuls of the peanut butter mixture evenly over the chocolate cake batter.
    • Sprinkle the chocolate chips and mini Reese’s cups evenly over the top.
  4. Bake:
    • Bake in the preheated oven for about 45-50 minutes, or until the cake is set and a toothpick inserted into the center comes out with just a few moist crumbs.
  5. Cool and Serve:
    • Remove the cake from the oven and allow it to cool slightly before serving.
    • Serve warm or at room temperature and enjoy!


  • Calories: 385 kcal per serving
  • Servings: 16 servings

Most Popular Questions and Their Answers Related to Chocolate Peanut Butter Earthquake Cake

  1. Can I use a different cake mix flavor?
    • Yes, you can use any cake mix flavor, but chocolate fudge complements the peanut butter best.
  2. Can I substitute the mini Reese’s cups?
    • Yes, you can use peanut butter chips, chopped peanuts, or other small chocolate candies.
  3. How should I store leftovers?
    • Store in an airtight container at room temperature for up to 3 days or in the refrigerator for up to a week.
  4. Can I freeze this cake?
    • Yes, wrap individual slices in plastic wrap and foil before freezing. Thaw at room temperature.
  5. Is it necessary to soften the cream cheese?
    • Yes, softened cream cheese ensures a smooth and creamy mixture.
  6. Can I use crunchy peanut butter instead of creamy?
    • Yes, crunchy peanut butter adds texture to the cake.
  7. Can I add other mix-ins to the batter?
    • Yes, try adding chopped nuts, toffee bits, or additional chocolate chips.
  8. Do I need to use a mixer for the peanut butter mixture?
    • While not necessary, a mixer can help achieve a smoother mixture faster.
  9. How do I know when the cake is done?
    • The cake is done when a toothpick inserted into the center comes out with a few moist crumbs.
  10. Can I use homemade cake batter instead of a boxed mix?
    • Yes, homemade cake batter can be used. Just ensure the quantity matches a standard box mix.
  11. What kind of chocolate chips should I use?
    • Semi-sweet or milk chocolate chips work well, but you can use any variety you prefer.
  12. Can I make this cake in a different size pan?
    • Yes, adjust baking time if using a different size pan. A larger pan will yield thinner pieces and may bake faster.
  13. Is the vanilla extract necessary?
    • While optional, vanilla extract enhances the flavor of the peanut butter mixture.
  14. Can I use less powdered sugar?
    • Reducing powdered sugar will affect the consistency, but you can experiment to your taste.
  15. What if my peanut butter mixture is too thick?
    • Add a splash of milk to thin it out if necessary.
  16. Can I make this cake gluten-free?
    • Use a gluten-free cake mix and ensure all other ingredients are gluten-free.
  17. Can I make this cake dairy-free?
    • Substitute dairy-free butter, cream cheese, and chocolate chips to make it dairy-free.
  18. How can I make this cake more moist?
    • Adding an extra egg or a bit of sour cream to the cake batter can increase moisture.
  19. Can I use a sugar substitute?
    • Yes, use a sugar substitute that measures 1:1 for powdered sugar.
  20. What is the best way to serve this cake?
    • Serve slightly warm, possibly with a scoop of vanilla ice cream or a dollop of whipped cream.

Enjoy your delicious Chocolate Peanut Butter Earthquake Cake!

Achieving the perfect Chocolate Peanut Butter Earthquake Cake involves attention to detail and a few insider tips to ensure the best flavor and texture. Here are 20 secrets to help you create the perfect cake:

  1. Room Temperature Ingredients:
    • Ensure that all your ingredients, especially the cream cheese and butter, are at room temperature. This allows for better mixing and a smoother batter.
  2. High-Quality Ingredients:
    • Use high-quality chocolate fudge cake mix, peanut butter, and chocolate chips for the best flavor.
  3. Proper Mixing:
    • Do not overmix the cake batter to avoid a dense cake. Mix just until the ingredients are combined.
  4. Sift Dry Ingredients:
    • Sift the powdered sugar to avoid lumps in the peanut butter mixture.
  5. Cream Cheese Mixture Consistency:
    • Make sure the cream cheese mixture is smooth and creamy before dropping spoonfuls onto the cake batter.
  6. Even Distribution:
    • Spread the peanut butter mixture evenly over the cake batter to ensure even baking and distribution of flavors.
  7. Fresh Baking Powder:
    • If using a homemade cake mix, make sure your baking powder is fresh to ensure proper rise.
  8. Preheated Oven:
    • Always preheat your oven to the correct temperature before baking.
  9. Grease the Pan:
    • Grease your baking pan thoroughly to prevent the cake from sticking.
  10. Monitor Baking Time:
    • Check the cake a few minutes before the suggested baking time to avoid overbaking. Oven temperatures can vary.
  11. Toothpick Test:
    • Use the toothpick test to check for doneness. Insert a toothpick into the center of the cake; it should come out with a few moist crumbs, not wet batter.
  12. Cooling Time:
    • Allow the cake to cool in the pan for a few minutes before slicing. This helps set the cake and makes it easier to cut.
  13. Use a Hot Knife:
    • For clean slices, use a knife dipped in hot water to cut the cake.
  14. Layering Technique:
    • For a more even distribution of flavors, layer the peanut butter mixture and chocolate chips instead of adding them all at once.
  15. Extra Moisture:
    • Add a tablespoon of sour cream or Greek yogurt to the cake batter for extra moisture.
  16. Flavor Enhancements:
    • Add a teaspoon of espresso powder to the cake batter to enhance the chocolate flavor.
  17. Nutty Texture:
    • Fold in chopped peanuts or pecans into the peanut butter mixture for added texture and crunch.
  18. Variations:
    • Try using different types of chocolate chips, like dark chocolate or white chocolate, for variation.
  19. Storage:
    • Store the cake in an airtight container at room temperature for up to three days, or refrigerate for longer shelf life.
  20. Serve with Ice Cream:
    • Serve the cake slightly warm with a scoop of vanilla ice cream for an extra indulgent dessert.