In a bowl combine oats, milk, mashed banana, matcha powder, baking powder, maple syrup, salt and chopped white chocolate.
Pour the batter into a ramekin, top with some more chopped white chocolate and air fry at 170C/338F for about 15 minutes.
Enjoy!
Notes
If you dislike the texture of oatmeal, you can mix the batter with a blender. However if you decide to do so, i recommend adding the white chocolate after blending.
If you do not own an air fryer, you can bake it in the oven at 180C/355 for about 25 minutes and get the same result!