Smash bananas with a fork in a medium size bowl until a smooth consistency is reached and all noticeable lumps are out. Pour in your oats one cup at a time, stirring in between each cup (at first it may seem like it is not coming together, but keep smashing and mixing the mixture with your fork).
Divide the mixture into 16 equal balls and pop them in the oven on a greased baking sheet at 350 degrees for 3 minutes. Take the baking sheet out and use the bottom of your measuring up to squish the balls into a cookie shape (if you make them in a cookie shape before hand I find that they break in the process of doing so) and pop the cookies back in the oven for another 12-14 minutes.
Once cookies are finished, take them out of the oven and allow them to cool for at least two minutes. Serve as a fun breakfast, a craveable snack, or as a healthy dessert option. Hope you enjoy!