Ingredients

The following ingredients have 16 Servings
  • 1/4 cup creamy peanut butter
  • 1 cup water
  • 1/2 cup butter
  • 1 cup sugar
  • 1 cup brown sugar
  • 2 cups flour
  • 1 teaspoon salt
  • 1 teaspoon baking soda
  • 2 eggs
  • 1/2 cup buttermilk
  • 1 teaspoon vanilla
  • 3/4 cup butter
  • 6 tablespoons buttermilk
  • 1/2 cup peanut butter
  • 3 & 1/2 cups powdered sugar
  • 1 tablespoon vanilla
  • melted chocolate (for drizzling (optional))

Instruction

  • Preheat oven to 375 degrees.
  • For the cake: In a medium pot combine the peanut butter, water, and butter, and bring to a boil. Remove from heat.
  • In a separate bowl, mix together the sugar, brown sugar, flour, salt, and baking soda with a whisk. Add to the peanut butter mixture and combine.
  • Add the eggs, buttermilk, and vanilla to the bowl and mix well.
  • Pour into greased or parchment lined baking sheet that has an edge, such as a 12X17 jellyroll pan. Bake for 15 minutes at 375 degrees, or until a toothpick comes out clean.
  • For the Frosting: In a small pot bring the butter, buttermilk, and peanut butter to a boil. Remove pan from the heat and beat in the powdered sugar and vanilla. Pour frosting over the warm cake.