Creating the Best Sugar Cookie Icing Recipe for Hardening is simple. Follow these steps to ensure perfect results:

1. Combine Dry Ingredients: In a large mixing bowl, whisk together the powdered sugar and meringue powder until well combined.
2. Add Water: Gradually add the water to the dry mixture, stirring continuously until the icing starts to come together.
3. Mix Until Smooth: Beat the mixture on medium speed for about 5-7 minutes until it becomes smooth and glossy. The icing should hold a peak when lifted with a spatula.
4. Add Flavoring: If desired, add vanilla extract for added flavor and mix until incorporated.
5. Color the Icing: If you want colored icing, divide it into separate bowls and add a few drops of food coloring. Mix until you achieve your desired shades.
6. Adjust Consistency: If the icing is too thick, add a little more water, one teaspoon at a time, until you reach the desired consistency for piping. For flooding (covering cookies), it should be slightly thinner.
7. Transfer to Piping Bags: If you’re decorating with piping, transfer the icing into piping bags fitted with small round tips or use squeeze bottles for flooding.
8. Decorate Your Cookies: Start decorating your cooled sugar cookies with your icing. Let your creativity flow!