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Air Fryer Ham and Potato Casserole (Cheesy & Easy)

Name: Air Fryer Ham and Potato Casserole
Prep time: 10 min
Cook time: 25 min
Total time: 35 min
Ingredients: 10.5 ounces cream of mushroom soup (1 can); 1/2 cup whole milk; 1/4 teaspoon kosher salt; 1/4 teaspoon black pepper; 1 pound Russet or Yukon Gold potatoes (peeled and thinly sliced (about 1/8 inch)); 1/2 cup yellow onion (finely diced); 2 cups cooked ham (diced (or 1 pound ham steak, diced)); 1 1/2 cups sharp cheddar cheese (shredded)

Author: Laurie Fleming
Published: February 1, 2024

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If you have leftover ham and a bag of potatoes, you are about 35 minutes away from dinner. This air fryer ham and potato casserole layers tender potatoes, savory diced ham, and sharp cheddar in a creamy sauce, then cooks it all in the air fryer until the top is golden and bubbling. No oven, no fuss, and the air fryer’s circulating heat gives the edges a lightly crisped, almost roasted finish you don’t get from a standard bake.

Cheesy air fryer ham and potato casserole topped with golden melted cheddar in a baking dish

It is the kind of cozy, one-dish meal that works just as well after a holiday — think leftovers from an Air Fryer Honey Glazed Ham — as it does on a random Tuesday. Below you’ll find exactly how thick to slice the potatoes, why a quick parboil matters, and the doneness cues that guarantee creamy — never crunchy — results.

Close-up of creamy ham and potato casserole with bubbling cheese, cooked in the air fryer

Why You’ll Love This Recipe

Faster than the oven. The air fryer preheats in a minute or two and cooks the casserole in 20–25 minutes, so you skip the long bake.
A smart way to use leftover ham. Two cups of diced cooked ham (or a leftover Air Fryer Glazed Ham Steak) is the perfect amount and keeps good food from going to waste.
Genuinely creamy, cheesy comfort food. Cream of mushroom soup and milk make an easy sauce that turns the potatoes silky, while cheddar melts into a golden lid on top — a lot like my Air Fryer Potatoes au Gratin, but heartier.
Flexible. Swap the cheese, add vegetables, or make it dairy-free — the base recipe takes well to almost any change (see the variations below).
One dish. Everything cooks together in a single air fryer–safe dish, which means fewer pans to wash.

Serving of air fryer ham casserole on a plate showing tender potato layers and diced ham

Ingredients

Exact amounts and nutrition are in the printable recipe card at the bottom of the post.

Cream of mushroom soup — the creamy, savory base that binds everything together. Cream of chicken or cream of celery work too.
Whole milk — thins the soup into a pourable sauce that coats every potato slice. Almond milk, oat milk, or a splash of heavy cream all work.
Kosher salt and black pepper — season each layer, not just the sauce, so every bite has flavor.
Potatoes — see the note below. Thinly sliced potatoes are what make this casserole reliable.
Yellow onion — finely diced, for gentle sweetness and aroma.
Cooked ham — diced into bite-sized pieces. Leftover holiday ham, a ham steak, or deli ham all work since the ham only needs to heat through.
Sharp cheddar cheese — shredded, for that gooey golden top. Freshly grated melts best.

A note on the potatoes (read this first)

For a casserole that cooks evenly in 20–25 minutes, slice the potatoes about 1/8 inch thick — thin and uniform, not diced into chunks. Thin slices are the single biggest factor in avoiding crunchy, undercooked potatoes. Starchy potatoes like Russet or Yukon Gold are ideal because they turn fluffy and tender. If you prefer to dice or use thicker pieces, parboil them for 5 minutes first so they finish cooking in time. (If you love this layered, creamy potato style, my Air Fryer Potatoes au Gratin uses the same thin-slice trick.)

How to Make Ham and Potato Casserole in the Air Fryer

You’ll need an air fryer–safe dish that fits your basket — a 7-inch cake pan, a small casserole dish, or an air fryer baking barrel all work. Layering directly in the basket doesn’t hold together, so use a dish.

Thinly sliced potatoes, diced ham, and shredded cheese arranged before assembling the casserole

Step 1: Prep. Peel (optional) and thinly slice the potatoes about 1/8 inch thick. Finely dice the onion and cut the cooked ham into bite-sized pieces.

Step 2: Make the sauce. In a bowl, whisk the cream of mushroom soup with the milk until smooth. Season with kosher salt and black pepper.

Whisking cream of mushroom soup with milk to make the creamy casserole sauce

Step 3: Layer. Spread a thin layer of sauce in the bottom of your dish. Add a layer of potatoes, then a scatter of onion and ham, a little more sauce, and a sprinkle of cheddar. Repeat the layers, finishing with sauce and a final blanket of cheese on top.

Step 4: Cook. Preheat the air fryer to 360°F (180°C). Place the dish in the basket and cook for 20–25 minutes. Cooking time varies by air fryer model and potato thickness.nal.

Layering potato slices, diced ham, and cheddar into an air fryer–safe dish

Step 5: Check doneness. It’s done when a fork slides easily through the potatoes and the cheese is melted and golden. If the potatoes need more time but the top is browning fast, tent loosely with foil and add 5 minutes.

Step 6: Rest and serve. Let it sit 5 minutes so the layers set, then garnish with chopped parsley or chives and serve warm.

Casserole dish placed inside the air fryer basket before cooking

Recipe Variations

Cheesy broccoli: Add small chopped broccoli florets between the layers for color and a vegetable boost.
Sweet potato swap: Use sweet potatoes for some or all of the regular potatoes for a sweeter, more colorful dish.
Bacon and chive: Fold in crumbled cooked bacon and fresh chives for a smoky, fresh finish.
Spicy kick: Add diced jalapeños or a pinch of red pepper flakes.
Italian style: Layer in sliced tomatoes and mozzarella, and season with basil and oregano.
Greek-inspired: Use feta and spinach in place of some cheddar.
Caramelized onion: Swap raw onion for a layer of caramelized onions for deeper, sweeter flavor.
Extra creamy: Stir a few spoonfuls of sour cream into the sauce and use sharp cheddar.

Pro Tips for the Best Air Fryer Ham Casserole

Watch the top. If the cheese browns before the potatoes are done, tent with foil and keep cooking.
Slice evenly. Uniform 1/8-inch slices cook at the same rate — a mandoline makes this easy.
Parboil if in doubt. A quick 5-minute boil guarantees tender potatoes, especially with thicker cuts.
Season every layer. A pinch of salt and pepper between layers beats seasoning only the sauce.
Don’t overfill the dish. Leave room for air to circulate so the top browns and the center cooks through.
Use cooked ham. It only needs to heat through, so it won’t overcook the potatoes. A leftover Air Fryer Honey Glazed Ham is perfect here.
Let it rest. Five minutes off the heat lets the layers set so it serves in neat scoops.

Finished air fryer ham casserole with a golden, bubbly cheese top

What to Serve With Air Fryer Ham Casserole

This casserole is hearty enough to stand on its own, but it’s even better as part of a spread. Serve it with a crisp green salad, roasted Brussels sprouts, or green beans for contrast. Got more leftover ham to use up? Turn it into Air Fryer Ham and Cheese Crescent Rolls for lunch the next day, or homemade Air Fryer Ham and Cheese Hot Pockets for an easy snack. For more dinner inspiration, browse my roundup of 50 Easy Air Fryer Meals.

Ham and potato casserole variation with broccoli florets added between the layers

Frequently Asked Questions

What potatoes are best for this casserole? Starchy potatoes — Russet or Yukon Gold — give the fluffiest, most tender result. Red potatoes work too but hold a firmer texture, so slice them thin or parboil first.

How do I keep the potatoes from coming out undercooked? Slice them thin and even (about 1/8 inch). If you cut them thicker or dice them, parboil for 5 minutes before layering. Always test with a fork before serving.

Can I make this with leftover ham? Yes — leftover ham is ideal. Dice it into bite-sized pieces and layer it as written. It’s a great use for a holiday honey glazed ham.

What cheese melts best here? Cheddar is the classic choice. Colby Jack, Monterey Jack, mozzarella, and Gruyère also melt beautifully. Freshly grated melts more smoothly than pre-shredded.

Do I need to preheat the air fryer? Yes. Preheating helps the casserole start cooking evenly right away and keeps cook times consistent.

Can I add vegetables? Absolutely. Broccoli, bell peppers, spinach, or mushrooms all work — cut them small so they cook in time.

How do I store and reheat leftovers? Store in an airtight container in the fridge for 3–4 days. Reheat in the air fryer at 350°F for a few minutes or in the microwave until hot.

Can I make it ahead? Yes. Assemble the casserole, cover, and refrigerate. Cook straight from cold and add a few extra minutes to the time.

Can I make it dairy-free? Use a dairy-free cream soup or a roux-based sauce, plant-based milk, and dairy-free cheese.

How do I know when it’s done? The potatoes should be fork-tender and the cheese melted and bubbly with a golden top.

Fork testing a tender potato slice in the cooked ham casserole for doneness

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