Air Fryer Au Gratin Potatoes

Air Fryer Au Gratin Potatoes are a creamy, cheesy, and comforting side dish made with thinly sliced potatoes layered in a rich garlic cream sauce and topped with melted cheese. The air fryer makes this classic potato dish quicker and easier while creating beautifully tender potatoes with a golden, bubbly cheese topping. Perfect for family dinners, holidays, or serving alongside roasted chicken, steak, or pork chops.

Recipe Information

• Prep Time: 15 minutes

• Cooking Time: 25–30 minutes

• Total Time: 45 minutes

• Servings: 4

• Course: Side Dish

• Cuisine: American

• Cooking Method: Air Fryer

Ingredients

• 1½ pounds Yukon Gold potatoes, thinly sliced

• ¾ cup heavy cream

• ½ cup whole milk

• 1 cup shredded sharp cheddar cheese

• ½ cup shredded mozzarella cheese

• 2 tablespoons butter

• 2 cloves garlic, minced

• ½ teaspoon salt

• ¼ teaspoon black pepper

• ½ teaspoon onion powder

• ¼ teaspoon paprika

• ½ teaspoon dried thyme

• 2 tablespoons grated Parmesan cheese

• 1 tablespoon chopped fresh parsley (optional)

Instructions

Step 1: Prepare the Potatoes

Wash and peel the potatoes if desired. Using a sharp knife or mandoline slicer, cut them into thin, even slices approximately ⅛ inch thick. Try to keep the slices uniform so they cook evenly.

Step 2: Prepare the Cream Sauce

In a medium mixing bowl, whisk together the heavy cream, milk, minced garlic, salt, black pepper, onion powder, paprika, and dried thyme until well combined.

Step 3: Prepare the Air Fryer Dish

Lightly grease an air-fryer-safe baking dish with butter. Make sure the dish fits comfortably inside your air fryer basket.

Step 4: Arrange the Potato Layers

Arrange half of the sliced potatoes in the prepared baking dish, slightly overlapping each slice. Sprinkle half of the cheddar and mozzarella cheese over the potatoes.

Step 5: Add the Cream Mixture

Pour half of the prepared cream mixture evenly over the potato layer. Arrange the remaining potato slices on top and pour the remaining cream mixture over them.

Step 6: Add the Cheese Topping

Sprinkle the remaining cheddar, mozzarella, and Parmesan cheese evenly over the top. Dot with small pieces of butter for extra richness.

Step 7: Air Fry the Potatoes

Preheat the air fryer to 350°F (175°C). Cover the baking dish tightly with aluminum foil and place it carefully inside the air fryer basket.

Air fry for approximately 20 minutes, allowing the potatoes to soften in the creamy sauce.

Step 8: Uncover and Brown the Cheese

Carefully remove the foil and continue air frying for another 8–10 minutes, until the potatoes are fork-tender and the cheese is melted, golden, and bubbly.

Step 9: Check for Doneness

Insert a fork or knife into the center of the potatoes. It should slide through easily. If the potatoes are still firm, continue cooking in 3–5-minute intervals.

Step 10: Rest and Serve

Remove the baking dish carefully from the air fryer and let it rest for 5–10 minutes. Garnish with freshly chopped parsley and serve warm.

Questions and Answers (Q&A)

Q1: What are the best potatoes for Air Fryer Au Gratin Potatoes?

Yukon Gold potatoes are excellent because they have a creamy texture and hold their shape well. Russet potatoes also work and create a softer, fluffier result.

Q2: Do I need to peel the potatoes?

No. Peeling is optional. Yukon Gold potatoes have thin skins, so you can leave them unpeeled after washing thoroughly.

Q3: How thin should I slice the potatoes?

Slice the potatoes approximately ⅛ inch thick. Uniform slices help the potatoes cook evenly and become tender.

Q4: Can I use pre-shredded cheese?

Yes! Pre-shredded cheddar and mozzarella are convenient options. However, freshly grated cheese generally melts more smoothly.

Q5: Can I make this recipe without heavy cream?

Yes! You can substitute half-and-half or use additional whole milk. The sauce may be slightly thinner and less rich.

Q6: Why are my au gratin potatoes still hard?

The slices may be too thick, or the cooking time may be insufficient. Covering the dish during the first part of cooking helps soften the potatoes.

Q7: Can I prepare these potatoes ahead of time?

Yes! Assemble the dish, cover it, and refrigerate for up to 24 hours before cooking. Allow it to sit at room temperature briefly while the air fryer preheats, and adjust the cooking time as needed.

Q8: Can I add bacon to this recipe?

Absolutely! Add cooked, crumbled bacon between the potato layers or sprinkle it over the cheese topping for a smoky flavor.

Q9: Can I use different types of cheese?

Yes! Gruyère, Monterey Jack, Gouda, Parmesan, and mozzarella are all delicious choices. Combining different cheeses adds extra flavor.

Q10: Can I make Air Fryer Au Gratin Potatoes without foil?

Yes, but covering the dish during the initial cooking stage helps trap steam and cook the potatoes evenly. Without foil, the cheese may brown before the potatoes become tender.

Q11: What temperature should I use in the air fryer?

A temperature of 350°F (175°C) works well for this recipe. Cooking time may vary depending on your air fryer and the thickness of the potatoes.

Q12: What can I serve with au gratin potatoes?

These cheesy potatoes pair beautifully with roasted chicken, grilled steak, pork chops, baked salmon, meatloaf, or steamed vegetables.

Q13: How do I store leftovers?

Allow the potatoes to cool, then transfer them to an airtight container. Refrigerate for up to 3–4 days.

Q14: Can I freeze au gratin potatoes?

Yes, but cream-based sauces can change texture after freezing and thawing. For the best quality, enjoy them fresh or refrigerate leftovers.

Q15: How do I reheat leftover potatoes?

Reheat in the air fryer at 325°F (163°C) for approximately 5–8 minutes, or until heated through. Cover loosely with foil if the cheese begins browning too quickly.

Q16: Can I make this recipe gluten-free?

Yes! This recipe can be naturally gluten-free when all ingredients, including seasonings and cheese, are certified gluten-free. Check product labels before preparing.

Q17: How do I get a golden, crispy cheese topping?

Remove the foil during the final cooking stage and allow the cheese to brown for approximately 8–10 minutes. Keep an eye on it to prevent burning.

Q18: Can I add vegetables to au gratin potatoes?

Yes! Thinly sliced onions, mushrooms, or steamed broccoli make delicious additions. Avoid adding too much moisture because it can make the sauce watery.