Get a comforting, crowd-pleasing dinner on the table fast with this Potatoes Au Gratin with Ham. It’s the perfect creamy potato gratin, loaded with savory ham and cheese for a one-dish meal that solves weeknight chaos. I promise it’s easier than you think with just a handful of ingredients and my tested shortcuts. Your family will ask for this ham and potato casserole again and again.

What You’ll Need for Potatoes Au Gratin with Ham

Your Timeline for This Cozy Potatoes Au Gratin with Ham

Let’s talk time, because I know you don’t have any to spare. This recipe is a classic weekend cooking ritual that’s totally worth it.

You’ll need about 20 minutes of active prep. The oven does the heavy lifting for 70 minutes. That gives you over an hour to tackle laundry, help with homework, or just breathe.

The total time is 90 minutes, but most of it is hands-off baking. Compared to many casseroles, this Potatoes Au Gratin with Ham is straightforward. For another fantastic, hands-off potato side, check out my Garlic Herb Potato Gratin.

Thoughtful Tips for Special Diets

I love making recipes work for everyone at the table. If you’re sugar-conscious or managing dietary needs, you can easily adapt this ham and potato casserole.

First, focus on portion size for better glycemic control. A smaller serving alongside a big green salad is a great strategy.

You can also use lower-fat milk and a reduced-fat cheese blend to lighten it up. Always check your ham label for added sugars if that’s a concern for you.

My Can’t-Miss Pro Tips for the Best Gratin

After making this dozens of times for my own crew, I’ve nailed down the secrets. These tips will guarantee your cheesy potato bake turns out perfect.

Slice Potatoes Evenly: Use a mandoline or food processor for uniform slices. This ensures everything cooks at the same rate.

Flavor Swap: Swap half the cheddar for Gruyère cheese. It adds a wonderfully nutty flavor that takes this au gratin recipe to new heights.

Diet Tweak: Make it gluten-free by using a 1:1 gluten-free flour blend in the sauce. It works like a charm.

For the ultimate creamy side dish, the technique in my Loaded Mashed Potatoes uses a similar rich base. Storage Tip: Let leftovers cool completely before covering. Reheat individual portions in the microwave to keep the topping crisp.

Potatoes Au Gratin with Ham

Creamy potatoes au gratin with diced ham baked in a rich cheese sauce. This comforting dish features russet potatoes layered with ham and topped with sharp cheddar. Perfect for family dinners.

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Prep Time 20 minutes mins

Cook Time 1 hour hr 10 minutes mins

15 minutes mins

Total Time 1 hour hr 45 minutes mins

Course Dinner, Side Dish

Cuisine American, French

Servings 6 servings

Calories 420 kcal

Equipment

• 9×13-inch baking dish
• oven
• medium saucepan
• whisk
• knife
• cutting board
• measuring spoons
• measuring cups
• aluminum foil

Ingredients

  

Main Ingredients

• 4 tablespoons unsalted butter, softened
• 2 pounds russet potatoes, peeled and thinly sliced
• 8 ounces cooked ham, diced
• 1 small yellow onion, finely chopped
• 1/4 cup all-purpose flour
• 2 cups whole milk
• 1 cup heavy cream
• 1 teaspoon kosher salt
• 1/2 teaspoon black pepper
• 1/4 teaspoon ground nutmeg
• 2 cups shredded sharp cheddar cheese

Instructions

 

• Preheat your oven to 375°F and grease a 9×13 inch baking dish with 1 tablespoon of the softened butter.
• Arrange a single, even layer of half the sliced potatoes in the prepared baking dish, then evenly sprinkle the diced ham and chopped onion on top.
• In a medium saucepan over medium heat, melt the remaining 3 tablespoons of butter, then whisk in the flour and cook for 1 minute until it forms a smooth, bubbly paste.
• Gradually pour in the milk and cream while whisking constantly to prevent lumps, then add the salt, pepper, and nutmeg and cook for 3-5 minutes until the sauce thickens and coats the back of a spoon.
• Remove the sauce from the heat and stir in 1 1/2 cups of the cheddar cheese until it is fully melted and the sauce is smooth.
• Pour half of the cheese sauce evenly over the potatoes and ham in the baking dish, then arrange the remaining potato slices on top and pour the rest of the sauce over everything, gently shaking the dish to help the sauce settle.
• Cover the dish tightly with aluminum foil and bake for 45 minutes, then remove the foil, sprinkle the remaining 1/2 cup of cheese on top, and bake uncovered for another 20-25 minutes until the top is golden brown and the potatoes are tender when pierced with a knife.
• Let the gratin rest for 15 minutes before serving to allow the sauce to set for easier slicing.

Notes

Let the gratin rest for 15 minutes before serving to allow the sauce to set for easier slicing.

Keyword casserole, cheese sauce, comfort food, ham, potatoes au gratin

Nutrition and Health Benefits

This comforting dish offers more than just great taste. Let’s break down what’s in your cozy bowl of Potatoes Au Gratin with Ham.

Potatoes are a good source of vitamin C and potassium. The ham provides protein to help keep everyone satisfied. Using whole milk and cheese adds calcium for strong bones.

This creamy potato gratin is richer than some sides, so balance your plate. Serve it with a light vegetable, like my Roasted Sweet Potatoes, for a rounded meal. For more on the benefits of dairy in cooking, you can read this resource from Healthline. Another great cheesy, protein-packed option is my Chicken Divan.

How to Make a Lighter Version

Want all the cozy flavor with a lighter touch? You can easily tweak this recipe. I do it often when I’m meal prepping for the week.

Use 2% milk instead of whole milk and cream. The sauce will still be creamy, just a bit less rich. You can also reduce the cheese by half a cup and not miss it.

For a different take on a lighter potato dish, try my Classic Potato Salad. It’s a vinegar-based side that’s full of flavor.

How to Serve Your Potatoes Au Gratin with Ham for Maximum Cozy

This dish always reminds me of big family gatherings after soccer games. It’s the ultimate comfort food that brings everyone to the table. Here’s how I love to serve it.

Let it rest for a full 15 minutes after baking. This lets the sauce set so you get clean, beautiful slices. Pair it with something simple and green, like steamed broccoli or a crisp apple salad.

It’s also fantastic with roasted chicken or pork chops. For another hearty pairing, my Garlic Parmesan Potato Wedges are a kid-approved hit. And don’t forget a crusty baguette to scoop up every last bit of cheesy sauce!

Common Mistakes (So You Don’t Make Them)

I’ve made all the mistakes so you don’t have to. Let’s troubleshoot the most common issues with this Potatoes Au Gratin with Ham.

“Why is my sauce lumpy?” Whisk constantly when adding the milk to the flour-butter paste. Gradual addition is the secret to a smooth, creamy sauce.

“How do I prevent soggy potatoes?” Slice them evenly and don’t skip the initial covered bake. The foil trap steams them to tenderness before the final browning. For another dish where sauce consistency is key, see my tips for Creamy Mac and Cheese.

“My top isn’t browning.” Make sure you remove the foil for the last 20-25 minutes. If it’s still pale, switch the oven to broil for the last 2-3 minutes, watching closely. For more on achieving the perfect cheese pull, this guide from Serious Eats is excellent. Another cheesy bake that requires similar attention is my Scalloped Portobello Mushrooms.

Remember, letting the gratin rest is non-negotiable. It makes slicing so much easier and allows the flavors to settle beautifully.

How to Store and Reheat Like a Pro

This recipe makes fantastic leftovers—if you’re lucky enough to have any! My kids often ask for it in their lunch thermos the next day.

Cool leftovers completely, then cover tightly or transfer to an airtight container. It will keep in the fridge for 3-4 days. Reheat single servings in the microwave for about 90 seconds.

For larger portions, reheat covered in a 350°F oven until warmed through. You can freeze it for up to 2 months, though the texture of the potatoes may soften slightly upon thawing. For another great make-ahead casserole, my Hashbrown Casserole is a freezer champion.

Why You Absolutely Need to Try This Recipe

If you’re looking for a dependable, crowd-pleasing dish that feels special without the stress, this is it. This Potatoes Au Gratin with Ham has saved my dinner hour more times than I can count.

It turns simple ingredients into something truly memorable. The creamy, cheesy layers with savory ham are pure comfort. I promise it’s easier than traditional scalloped potatoes and so much more satisfying.

Gather your family, pop this in the oven, and enjoy the smell of dinner solving itself. For more cozy, cheesy ideas, explore my Easy Cheese Fondue, classic Macaroni and Cheese, or simple Perfect Baked Potatoes. Each one is a guaranteed way to bring everyone to the table with a smile.

More Cozy Potato Recipes You’ll Adore

If you loved this hearty bake, you’re going to want to try these other family-friendly favorites. They’re all tested in my kitchen and designed for real, busy life.

Sweet Potato Salad – A vibrant, make-ahead side with a tangy dressing that’s perfect for picnics.

Sweet Potato Casserole – The ultimate holiday side dish with a crunchy pecan topping that’s always a hit.

Frequently Asked Questions