Preheat the oven to 350℉ and line a baking sheet with parchment paper.
Add the almond flour, baking soda, salt, and cinnamon to a bowl and mix well.
Mash the bananas with a fork and add them to the dry ingredients (I mash, then measure).
Add the maple syrup and the egg if using.
Mix until all the ingredients are evenly incorporated.
Use a 1.5 tablespoon cookie scoop to scoop the dough onto the baking sheet.
Gently flatten the cookies with a fork or back of a spoon.
Bake for 26-30 minutes until the middles have set and aren't wet (mine were perfect at 28 minutes)
After the cookies come out of the oven, place them on a wire rack to cool.
Let the cookies come to room temperature before eating.
Store in an air tight container in the fridge for up to 5 days.
