This Low Calorie Royal Icing is ZERO CALORIES thanks to my favorite all-natural zero calorie powdered sugar! You can swap it out for your favorite powdered sugar or powdered sugar substitute. This makes enough frosting to cover 30 cookies, and if you add too much water, don't worry... Just add more powdered sugar 1/2 tablespoon at at time.Special Tip: Be sure to see the notes below, I included more flavors like Peppermint, Strawberry, and Lemon Icing!