Preheat your oven to 350F and line a baking sheet with parchment paper.
Place all dry ingredients (almond flour, coconut flour, baking soda, cream of tartar, and salt) in a medium bowl and mix with a fork until well combined.
Add the wet ingredients (coconut oil, maple syrup, and vanilla extract) to a small bowl and whisk together.
Add the wet ingredients to the dry ingredients and stir with a fork until well combined.
Place the coconut sugar and cinnamon in a small bowl and mix together.
Scoop out two tablespoons of cookie dough and roll it in the palms of your hands until it forms a ball. Roll the cookie dough ball in the cinnamon sugar mixture and then place it on the cookie sheet.
Flatten the dough ball into a cookie shape with your palm, then repeat the process until you have 12 cookies on the baking sheet.
Bake for 12 minutes, then remove from heat and allow to cool on the baking sheet for at least 10 minutes before eating.
Store leftovers in an airtight container at room temperature for up to a week or in the freezer for up to a few months.