This icing was really fantastic to work with. I had never attempted anything like this before, but the icing hardened nicely, and stayed glossy & smooth. I applied it to the cookies using the back of a spoon. If you thin it out a little bit more, you can even paint it on your cookies. The icing is sweet, but since the cookies are not very sweet, that was alright with us.
Source: Incredible Edible Gluten-Free Food for Kids by Sheri L. Sanderson