To add to the gluten-free recipes, if you haven't seen this yet, here you go:
Gluten-Free Peanut Butter Cookies
1 cup peanut butter
1 cup sugar
1 egg
1/2 tsp salt
1 tsp vanilla (optional)
Mix together. Bake 350F/180C for 10-12 minutes. Allow to cook before moving, as cookies are very crumbly. Very tasty though! I'm not gluten-free, and I actually prefer the flavor of these to traditional PB cookies.