- Prepare the Potatoes:
- Peel the potatoes and thinly slice them into rounds. You can use a mandoline slicer for even slices.
- Prepare the Cheese Mixture:
- In a bowl, combine the shredded cheddar cheese and shredded Parmesan cheese. Set aside.
- Prepare the Cream Mixture:
- In another bowl, whisk together the heavy cream, minced garlic, dried thyme, salt, and pepper.
- Layer the Potatoes:
- Lightly grease the air fryer basket with cooking spray or brush with olive oil.
- Arrange a layer of potato slices in the bottom of the air fryer basket, overlapping slightly.
- Sprinkle some of the cheese mixture over the potatoes.
- Drizzle a bit of the cream mixture over the cheese.
- Repeat Layers:
- Continue layering potatoes, cheese mixture, and cream mixture until all ingredients are used, ending with a layer of cheese on top.
- Air Fry:
- Cover the air fryer basket with aluminum foil or use a foil sling to tent the potatoes loosely.
- Air fry at 375°F (190°C) for 25-30 minutes, until the potatoes are tender and the cheese is melted and bubbly.
- If you prefer a crispy top, uncover the potatoes during the last 5 minutes of cooking.
- Serve:
- Carefully remove the Au Gratin potatoes from the air fryer basket.
- Let them rest for a few minutes before serving to allow the cheese to set slightly.
- Garnish with fresh chopped parsley or additional thyme, if desired, and serve hot.
Tips:
- Potato Type: Russet potatoes work well for Au Gratin due to their starch content, which helps thicken the cream sauce.
- Cheese Options: Feel free to experiment with different cheeses, such as Gruyère, mozzarella, or Monterey Jack, for varying flavors.
- Herb Variations: Substitute dried thyme with rosemary, oregano, or a herb blend that complements your taste preferences.
Enjoy these creamy and cheesy air fryer Au Gratin potatoes as a comforting side dish that pairs well with any meal!