Grease a shallow baking dish with cooking spray. Set aside.
In a bowl, mix together both cheeses.
In the bottom of prepared baking dish, place 1 layer of potato slices overlapping slightly.
Sprinkle the potatoes with garlic powder, salt and black pepper.
Place 1 tablespoon of cream over potatoes, and top with a thin layer of cheese mixture.
Repeat the layers three times.
Place the butter on top in the shape of dots.
Slide the Air Fryer Basket inside and adjust the temperature to 350 °F to preheat for 5 minutes.
After preheating, arrange the baking dish into the Air Fryer Basket.
Slide the basket into Air Fryer and set the time for 20 minutes.
After cooking time is finished, remove the baking dish from Air Fryer and set aside for about 5 minutes before serving.