Mash the banana

• Mash the banana in a mixing bowl until smooth.

Mix the cookie dough

• Add the oats, peanut butter, egg and chocolate chips.
• Stir until everything is well combined.

Shape the cookie

• Spoon the dough onto a piece of parchment in the air fryer basket and flatten into a cookie shape.

Air fry

• Air fry at 180 °C until set and golden.

Serve

• Let the cookie cool slightly, then enjoy warm.