Peanut Butter Icing 1 Reviews By MilaniSweets recipe Comments | 2 Favorites | 66 Print Ingredients 1/4 cup butter2 cups confectioners’ sugar3 tablespoons milk1 teaspoon vanilla extract1/2 cup peanut butter Instructions In small saucepan, heat butter over low heat, stirring occasionally until butter turns light amber. Remove from heat. Whisk in sugar, milk and vanilla extract. Stir in peanut butter. Stir until of spreading consistency.