This Peanut Butter Sheet Cake is a moist sheet cake topped with a gooey peanut butter glaze. Peanut butter lovers, this is your dessert!
In a medium pot add the peanut butter, water, and butter and bring to a boil. Remove from heat.
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 vanilla. Pour frosting over the warm cake.
Source: Nina Jones