Preheat the oven to 350 degrees F and line a baking sheet with parchment paper.
In a medium bowl or stand mixer, add the bananas, coconut flakes, oats; mash. I prefer to use my stand mixer (or a food process) because it makes this job super easy. I do let it run for a minute or even more. You want the ingredients to thoroughly mash together.
Stir in the baking powder, peanut butter, honey, and cinnamon; mix well.
The dough will be sticky. Use a cookie scoop or a ¼ cup measure to portion the dough into mounds. The cookies will not spread. With the back of a spoon, spatula, or measuring cup, slightly flatten the dough.
Bake for 15 minutes, or until the edges of the cookies have begun to brown. Let cool on the baking sheet for a few minutes before transferring to a cooling rack.
Notes
Storage:
Store in an airtight container for 5 days or freeze for longer storage. I will often make a double batch for the freezer.