Put this sour cream frosting on cupcakes, cakes or cookies! sour cream frosting Recipe Type: Dessert Cuisine: American Author: Amy Duska Prep time: 10 mins Cook time: 10 mins Total time: 20 mins Serves: 36 Ingredients 8 T room temperature butter 3/4 cup sour cream 7 cups powdered sugar 1/4 cup milk 1 t salt