The best homemade cookies in GF translation I've had are peanut butter. My theory is that peanut butter is a strong enough flavor (and craving) that you can satisfy with or without flour. There are some very simple recipes online that yield a delicious substitute to the gluten-full kind. I tweaked the recipe by adding a little crisco for body and cocoa for an integrated chocolate swirl. The outcome is a crispy, cocoa peanut butter cookie. They're great for dipping in coffee. Next time I'd like them a little sweeter and with more chocolate. Then again, can you ever have too much chocolate?