This Peanut Butter Sheet Cake is a decadent and delicious dessert that is perfect for any occasion. The moist and fluffy cake topped with creamy peanut butter frosting will have you coming back for seconds!

Preparation time: 20 minutes | Cooking Time: 25 minutes | Total Time: 45 minutes | Serves: 12


  • 2 cups all-purpose flour
  • 2 cups sugar
  • 1 tsp baking soda
  • 1/2 tsp salt
  • 1 cup butter
  • 1 cup water
  • 1/4 cup creamy peanut butter
  • 1/2 cup buttermilk
  • 2 eggs, beaten
  • 1 tsp vanilla extract


  1. Preheat oven to 350°F and grease a 9×13 inch baking pan.
  2. In a large bowl, whisk together flour, sugar, baking soda, and salt.
  3. In a saucepan, combine butter, water, and peanut butter. Bring to a boil, then pour over dry ingredients and mix well.
  4. Add buttermilk, eggs, and vanilla extract to the batter and mix until smooth.
  5. Pour batter into the prepared pan and bake for 25 minutes or until a toothpick inserted in the center comes out clean.
  6. Let the cake cool completely before frosting.
  7. Spread peanut butter frosting over the cooled cake and serve.

Nutrition Information:

Calories: 380 || Carbohydrates: 45g || Protein: 5g || Fat: 20g || Saturated Fat: 10g || Cholesterol: 65mg || Sodium: 320mg || Fiber: 1g || Sugar: 30g

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