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Peanut Butter Earthquake Cake

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A gooey, rich, and indulgent peanut butter earthquake cake with a tender peanut butter cake base and creamy, swirled sweet filling. This easy dessert delivers irresistible texture and flavor, perfect for gatherings or cozy nights in.

  • Author: Sophia
  • Prep Time: 15 minutes
  • Cook Time: 40 minutes
  • Total Time: 1 hour 15 minutes
  • Yield: 12 servings
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

  • For the cake:
  • 1 1/2 cups all-purpose flour
  • 1 cup granulated sugar
  • 1 teaspoon baking powder
  • 1/2 teaspoon baking soda
  • 1/4 teaspoon salt
  • 3/4 cup creamy peanut butter
  • 1/2 cup vegetable oil
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 1 cup buttermilk
  • For the earthquake cream swirl:
  • 8 ounces cream cheese, softened
  • 1/2 cup unsalted butter, melted
  • 3 cups powdered sugar
  • 1/2 cup creamy peanut butter
  • 1/2 cup chocolate chips (optional, halal-friendly)

Instructions

  1. Preheat oven to 350°F (175°C) and grease a 9×13-inch baking pan.
  2. In a large bowl, whisk together flour, granulated sugar, baking powder, baking soda, and salt.
  3. Add peanut butter, oil, eggs, vanilla extract, and buttermilk. Mix until smooth.
  4. Pour the batter into the prepared pan and spread evenly.
  5. In a separate bowl, beat cream cheese until smooth. Add melted butter, powdered sugar, and peanut butter. Mix until creamy.
  6. Drop spoonfuls of the cream cheese mixture over the cake batter.
  7. Use a knife to gently swirl the mixture into the batter. Don’t overmix.
  8. Sprinkle chocolate chips on top, if using.
  9. Bake for 35–40 minutes, until edges are set but the center is slightly gooey.
  10. Cool for at least 20 minutes before slicing and serving.

Notes

  • Use crunchy peanut butter for texture.
  • Add chopped peanuts or mini marshmallows for extra crunch or gooeyness.
  • This cake is rich and sweet—reduce powdered sugar if desired.
  • No electric mixer needed—can be mixed by hand.
  • For a chocolate twist, add cocoa powder to the batter or swirl in chocolate spread.

Nutrition

Find it online: https://savorymomskitchen.com/peanut-butter-earthquake-cake/