Ingredients

The following ingredients have 16 Servings
  • 1 1/2 cups granulated sugar
  • 1/2 cup brown sugar
  • 2 cups flour
  • 1 teaspoon baking soda
  • 1 teaspoon salt
  • 1 1/2 cups milk (divided)
  • 1 cup creamy peanut butter
  • 1 cup butter
  • 2 teaspoons vanilla
  • 2 large eggs
  • 1 cup granulated sugar
  • 1/3 cup butter
  • 1/3 cup milk
  • 1/2 cup creamy peanut butter
  • 1/2 cup semi-sweet chocolate chips

Instruction

  • Preheat oven to 400 degrees. Grease a rimmed half sheet pan.
  • Add the sugars, flour, baking soda, and salt to the bowl of a stand mixer fitted with the paddle attachment.
  • Add 1 cup of milk, peanut butter, and butter to a small sauce pan and bring to a boil, stirring often.
  • Remove from heat and let set for 5 minutes to cool. Add to the bowl with the flour and sugar.
  • Add the remaining 1/2 cup of milk, vanilla, and eggs to the mixer and turn to low speed. Mix until just combined.
  • Spread cake batter into prepared baking sheet and bake for 15 minutes. Cool completely.
  • To make the frosting, add the sugar, butter, and milk to a small sauce pan and stir well. Bring to a boil and boil for exactly 60 seconds.
  • Remove from the heat and stir in the peanut butter and chocolate chips until smooth and melted.
  • Pour warm frosting over the cooled cake and spread with a spatula. Frosting will harden as it cools.
  • Cut and serve once frosting has cooled and set.