Preheat your oven to 350℉ (176°C). Line a baking sheet with parchment paper and spray with cooking spray. In a large mixing bowl, mash your ripe banana.
Add the oats, peanut butter, and chocolate chips to the mashed banana. Stir the mixture until it's well combined.
Scoop about 2 tablespoons of the cookie dough batter at a time and roll it with your hands into a ball. Place each ball on the cookie sheet.
Mash the cookie dough balls down as thick as you want them to be in a cookie shape. Bake in the preheated oven for 8-10 minutes or until they are golden brown.
Hint: These cookies will not flatten as they bake so be sure and mash them down as thick as you want the end result to be. To ensure they cook evenly, use a cookie dough scoop to make them all the same size. I use a 2 Tbsp cookie scoop.
