In a bowl, mash the banana.
Add the oats, baking powder, protein powder, salt and peanut butter to the bowl.
Mix well to form your cookie dough.
Get a small section of baking paper and spray with 1 kcal spray.
Spoon your cookie dough mixture onto the baking paper and spread into a cookie shape.
Add the chocolate chips on top.
Airfry/bake at 180 degrees Celsius for about 5 minutes.
You can make this in advance and have as a snack or breakfast. You could even add some vanilla Greek yogurt on top.