Hi Jane! I’ve worked with the Chebe cinnamon roll mix before, but haven’t baked with it in cookies. Based on my experience working with it in cinnamon rolls, I’d say it’s probably not a great substitute for most cookie recipes here, since it’s so high starch and doesn’t have the same protein content as a typical 1:1 gluten-free mix. To accommodate your rice & oat allergies you’d probably be best served looking at recipes that use individual flours that you mix yourself rather than those that call for a 1:1 mix if you’d like to use the Chebe flour. Paleo cookie recipes that use almond flour or coconut flour are another good option!