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Peanut Butter Cake Recipe

4.6 from 53 reviews

This rich and creamy Peanut Butter Cake combines the classic flavors of peanut butter in both the moist cake and smooth frosting. With a tender crumb and luscious peanut butter frosting, this dessert is perfect for peanut butter lovers and can be topped with Reese’s Pieces or chopped peanut butter cups for an extra indulgent touch.

Ingredients

Scale

Cake

  • 1 cup water
  • ½ cup unsalted butter
  • ¾ cup creamy peanut butter
  • 2 cups all-purpose flour
  • 1 cup granulated sugar
  • 1 cup light brown sugar
  • 1 teaspoon baking soda
  • 1 ½ cups milk
  • 2 whole large eggs
  • 1 teaspoon vanilla extract

Frosting

  • ¾ cup butter
  • ¾ cup creamy peanut butter
  • 5 cups powdered sugar
  • 1 ½ teaspoons vanilla extract
  • ¼ cup milk (may need a little more to get desired consistency)

Toppings (optional)

  • ½ cup Reese’s Pieces or chopped peanut butter cups

Instructions

  1. Preheat Oven and Prepare Pan: Preheat your oven to 350º F (175º C). Grease and flour a 13×9 inch baking dish thoroughly, or line it with parchment paper to prevent sticking.
  2. Melt Peanut Butter Mixture: In a saucepan over low heat, melt together the water, unsalted butter, and creamy peanut butter. Whisk continuously until the mixture is smooth and fully combined. Avoid bringing it to a boil.
  3. Mix Dry Ingredients: In a large bowl, combine the all-purpose flour, granulated sugar, light brown sugar, and baking soda. Use a hand mixer or stand mixer to blend these dry ingredients evenly.
  4. Add Wet Ingredients: Into the dry mixture, pour the milk, add the eggs, and vanilla extract. Mix until the batter is smooth and all ingredients are fully incorporated.
  5. Combine Mixtures: Pour the melted peanut butter mixture into the batter and mix well until everything is evenly combined and smooth.
  6. Bake the Cake: Pour the batter into the prepared baking dish, spreading it evenly. Bake for about 30 minutes or until the top is golden brown and a toothpick inserted into the center comes out clean. The cake should spring back gently when pressed lightly.
  7. Cool the Cake: Remove the cake from the oven and allow it to cool completely in the pan before applying frosting to prevent melting.
  8. Make Frosting: Using a mixer, cream together the butter and creamy peanut butter until smooth and well combined.
  9. Add Frosting Ingredients: Gradually beat in powdered sugar, vanilla extract, and milk. Adjust the milk or powdered sugar to reach your desired spreadable consistency.
  10. Frost and Decorate: Once the cake is fully cooled, spread the frosting evenly over the top. Optionally, sprinkle Reese’s Pieces or chopped peanut butter cups on top for added texture and decoration.

Notes

  • Ensure the cake is completely cooled before frosting to avoid melting the frosting.
  • You can adjust the consistency of the frosting by adding more milk for thinner spread or more powdered sugar for thicker frosting.
  • For an extra peanut butter kick, use natural creamy peanut butter.
  • Storage: Store the cake in an airtight container in the refrigerator for up to 4 days.
  • Optional toppings add texture and flavor but can be omitted for a simple cake.

Keywords: peanut butter cake, peanut butter frosting, homemade cake, creamy peanut butter dessert, peanut butter recipe