We used 2 cups of tapioca flour and 1 cup of coconut flour, which results in a naturally sweet cookie with lots of crunch. The tapioca flour will make the dough a little more tender and sticky but we think the results are worth it.
Rolled oat flour (rolled oats you pulverize to a powder in your food processor) is another great gluten-free option and very easy to work with.
Ingredients
Optional:
Equipment
Find it online: https://www.rover.com/blog/breath-freshening-dog-treat/