Ideal for decorating sugar cookies, thanks to its consistency, our cookie icing recipe is simply delicious, and you can easily manipulate its density to make it thicker or thinner. And, like royal icing, this homemade sugar cookie icing dries quickly, which means you can add more decorations like colored sugar or sprinkles without having to wait hours for it to set. However, we recommend a total waiting time of 24 hours for the icing to be completely dry and the cookies ready to pack or wrap. You need three ingredients and food coloring if desired. But consider using natural coloring from beets, carrots, pomegranates, blueberries, and turmeric, which give beautiful and colorful shades minus the artificial and chemical additives. You can easily find these powdered natural colors in specialized supermarkets or online.