Preheat your oven to 350℉. Line a large baking sheet with parchment paper.
In a medium bowl, mix the well smashed bananas, nut butter, cacao powder, flour and salt (and if you're adding in the chips, vanilla etc.). Once mostly smooth, use a cookie scoop to transfer the dough to your pan and flatten the cookies out. They do not spread, Bake for 12-14 minutes. Allow to cool slightly on the pan and then transfer to a wire rack. Enjoy!
Notes
Any nut butter works here, just make sure it is all natural and creamy - where the only ingredients is the nut or the seed. The kind you stir.I used coconut sugar in my cookies.The cookies Nutritional Information does not include the sweetener, vanilla and chocolate chips.