Peanut Butter FrostingAugust 22, 2017August 22, 2018 AEbLOG Recipes Print Peanut Butter Frosting Ingredients 1 cup confectioner's sugar 1 cup peanut butter 1/3 cup heavy cream 5 tbsp butter 3/4 tsp vanilla 1/4 tsp kosher salt Instructions Whip all ingredients until smooth.