Peanut Butter Sheet Cake

IngredientsCake1/4 cup creamy peanut butter1 cup water1/2 cup butter1 cup sugar1 cup brown sugar2 cups flour1 teaspoon salt1 teaspoon baking soda2 eggs1/2 cup buttermilk1 teaspoon vanillaFrosting3/4 cup butter6 Tablespoon buttermilk1/2 cup peanut butter3 1/2 cups powdered sugar1 Tablespoon vanillaDirectionsPreheat oven to 375For the cakeIn a medium pot add 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 fork. Add to the peanut butter mixture.Add the eggs, buttermilk, and vanilla to the bowl and mix well.Stir well and pour into greased or parchment lined cookie sheet pan with a little edge (12X17 jellyroll pan)Bake for 15 minutes at 375 degreesFor the Frosting: In a small pot bring the butter, buttermilk, and peanut butter to a boil. Remove pan from the heat and add the powdered sugar and vanillaPour frosting over the warm cake