Preheat oven to 350 F
Wisk together Almond flour, coconut flour, cinnamon, cream of tartar, baking soda, xanthan gum, and salt.
In another bowl cream together butter, sweetener, vanilla and eggs.
Combine wet and dry ingredients.
In a small bowl combine the cinnamon and sweetener for the coating.
Roll dough into 1 1/2 balls and roll in the coating until well coated.
Place dough onto baking sheets lined with parchment paper.
Flatten cookies down to 1/2" thick.
Bake cookies for 12-15 minutes until just starting to brown.
Let cookies cool completely then enjoy!