Take out a large bowl and add your banana, peanut butter, egg, vanilla extract and cinnamon. Mix everything together until smooth.
Add your oats and protein powder into the bowl and mix until a thick dough forms. Add about a teaspoon of oat flour into a bowl with your blueberries to coat them in oatflour.
Gently fold in your blueberries and mix everything together.
Spray an air fryer basket with non-stick cooking spray.
Use a medium-sized cookie scoop and scoop your mixture onto the air fryer, flattening slightly to about 1/2 inch thick.
Air fry on 325F in batches for 8 to 10 minutes, checking at 8 minutes. Tops should be dry and lightly golden.
Let them cool for 2 to 3 minutes in the basket before removing. They will firm up slightly as they cool.
Finish cooking your remaining batches.
Serve.