I made these first birthday cookies for a dear friend's little girl. Due to an egg allergy, I used a new "royal icing" recipe, and I absolutely loved it! It's technically a glaze, but it will be my go-to icing from now on, unless I need to make something intricate or precise. I got the recipe from this website. You can make it thicker or thinner just by adding more sugar or more water. So easy!!