Preheat oven to 350 degrees Fahrenheit.
Lightly spray baking sheet with cooking spray.
In a medium size bowl mash peeled bananas with fork till smooth.
Add the oats and chocolate chips and stir until everything looks combined.
Scoop a large tablespoon of the mix into your hand and roll into a ball, flatten slightly to get the cookie shape. Continue till all the mix is gone.
Cook for around 15 mins or till they are golden brown.
Remove from oven and enjoy.