How Do You Stiffen Cream Cheese Frosting?
To stiffen cream cheese frosting, start by refrigerating the frosting. Once it has cooled, add powdered sugar to the frosting one tablespoon at a time, mixing well after each addition. Keep adding powdered sugar until the frosting reaches the desired consistency – thicker and stiffer. You can also add a small amount of cornstarch or flour to the frosting to help thicken it.