RECIPE: looking for: gluten free cookie recipes (no nuts)

I hope I'm posting this in the right place; I also posted it in the Dessert Exchange forum. My daughter and her friends (all rising seventh graders) donate their free time baking cookies and treats for homeless shelters on a monthly basis. They've been doing this for about seven months now and have so far donated over 225 dozen cookies to three different shelters. Anyway, it has come up recently that some "Gluten free" cookies/bars would be great to have as well, but none of us use that diet. Does anyone have any gluten free cookie or bar cookie recipes that they could share with the girls for this project? The cookies have to be yummy and NUT FREE (requirement for all the shelters). There's a lot on the internet but we need a place to start so I thought I'd start here. Thanks in advance for helping the girls!