In a medium bowl, combine together the butter, egg, vanilla extract and monkfruit sugar and mix thoroughly. Set aside.
In a large bowl, mix together almond flour, tapioca flour, protein powder, baking soda, and salt.
Slowly combine the wet ingredients into the large bowl of dry ingredients. Mix until just combined. Place the bowl in the fridge and chill for 20 minutes.
While the dough is chilling in the fridge, make the cinnamon sugar coating by combining cinnamon and monkfruit sugar.
Once the dough has chilled, preheat the oven to 350 Fahrenheight and use a large cookie scoop to make 6 round dough balls. Roll each ball in cinnamon sugar topping until coated entirely.
Once all dough balls have been coated with cinnamon sugar topping, place on cookie tray and press down slightly. Bake for 10-12 minutes.
Remove from oven and using the sides of a spatula (or large cup or round cookie cutter), shape the cookies to create more even circles by tapering the edges of the cookies. Allow to cool for 5-10 minutes before transferring to baking rack to finish cooling completely. Enjoy!