Thinly slice potatoes and evenly spray with oil.

Lightly spray a 7-inch cake pan or accessory bucket. Arrange potato slices vertically, aligning edges, and fan them out if there's room. Place the pan into your air fryer.

Air fry at 360°F (180°C) for 18 minutes.

While potatoes cook, mix heavy cream, salt, garlic powder, and black pepper in a bowl until combined.

After 18 minutes, pour the cream mixture over the potatoes. Gently press them down to help them settle into the cream.

Reduce air fryer temperature to 300°F (150°C) and cook for another 15-18 minutes, or until potatoes are tender when pierced.

Sprinkle shredded cheddar cheese over the top. Air fry for an additional 1-2 minutes, or until the cheese is melted and bubbly. Let cool for 10 minutes before serving.