Ham and Potato Au Gratin

Total Time: 1 hr 40 mins Difficulty: Intermediate
Layers of tender potatoes, diced ham, and sharp cheddar bathed in rich cream, baked until bubbling under a crisp, golden crust.
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Layers of tender potatoes, diced ham, and sharp cheddar bathed in rich cream come together in this comforting bake, bubbling under a crisp, golden crust. Each slice reveals a garlic-infused blanket of velvety sauce with a hint of cayenne for warmth, turning simple ingredients into a crowd-pleasing dinner that’s as cozy as it is flavorful. Ready to dive in and make your kitchen smell like home?

Key Ingredients

Before we get cooking, let’s gather everything you need to build those irresistible layers of potato, ham, and cheese in a luscious cream sauce.

  • 4 large russet potatoes, peeled and thinly sliced: Sturdy base that soaks up creamy sauce and crisps at the edges.
  • 2 cups cooked ham, diced: Savory, smoky bites that add meaty richness.
  • 2 cups shredded sharp cheddar cheese: Tangy melt that blankets the potatoes in gooey goodness.
  • 1 cup heavy cream: Lends luxurious thickness to the sauce.
  • 1 cup whole milk: Balances richness and keeps the sauce smooth.
  • 4 tablespoons unsalted butter: Foundation for a golden roux and adds depth of flavor.
  • 1/4 cup all-purpose flour: Thickens the roux into a velvety sauce.
  • 2 cloves garlic, minced: Infuses the sauce with fragrant, savory notes.
  • 1 teaspoon onion powder: Enhances sweetness without extra moisture.
  • 1 teaspoon salt: Seasons every layer evenly.
  • 1/2 teaspoon black pepper: Adds gentle warmth and depth.
  • 1/4 teaspoon cayenne pepper (optional, for a little heat): Offers a subtle kick if you like spice.
  • Fresh parsley, chopped (for garnish): Bright herb for a pop of color and fresh finish.

How To Make Ham and Potato Au Gratin

This dish is all about building layers of flavor: you’ll start by crafting a smooth, aromatic cream sauce, then alternate potatoes, ham, and cheese before baking until bubbling and golden. Follow these detailed steps to achieve perfectly tender potatoes and a crisp top every time.

1. Preheat your oven to 375°F (190°C). Grease a 9×13-inch baking dish with butter or cooking spray to ensure easy release.

2. In a large skillet over medium heat, melt 4 tablespoons of unsalted butter. Once fully melted, add the minced garlic and sauté for about 1 minute until fragrant.

3. Stir in the flour and cook for 1–2 minutes to form a roux. Gradually whisk in the heavy cream and whole milk, ensuring there are no lumps. Continue cooking until the sauce thickens, about 5 minutes.

4. Season the sauce with onion powder, salt, black pepper, and cayenne (if using). Stir to combine, then remove from heat.

5. In the prepared baking dish, layer half of the sliced potatoes evenly across the bottom. Top with half of the diced ham, then sprinkle half of the shredded cheddar cheese.

6. Pour half of the cream sauce over the first layers of potatoes, ham, and cheese, making sure everything is coated.

7. Repeat the layering process with the remaining potatoes, ham, and cheese. Pour the remaining cream sauce over the top, ensuring the potatoes are mostly covered.

8. Cover the baking dish with aluminum foil and bake for 40 minutes to cook the potatoes through.

9. Remove the foil and continue baking for an additional 20 minutes, or until the top is golden brown and bubbling.

10. Once done, remove from the oven and let the gratin rest for about 10 minutes. Garnish with fresh parsley before serving.

Serving Suggestions

This hearty gratin stands beautifully on its own but shines even more with complementary sides and finishing touches. Whether you’re hosting friends or feeding the family, these pairings will elevate each forkful of cheesy, creamy bliss.

  • Crisp green salad: Serve alongside a fresh mix of lettuce, cucumbers, and cherry tomatoes tossed in a light vinaigrette to cut through the richness.
  • Steamed seasonal veggies: Lightly steam broccoli, carrots, or green beans and toss with a squeeze of lemon for a bright contrast.
  • Crusty bread: Offer slices of warm baguette or sourdough to soak up any extra creamy sauce for a satisfying bite.
  • Pickled relish: A small side of pickles or pickled onions brings a tangy snap that balances the cheesy flavors.

Tips For Perfect Ham and Potato Au Gratin

To nail that dreamy texture and flavor every time, here are a few friendly pointers and fun twists. A couple of simple swaps or additions can take this dish from delicious to unforgettable without much extra effort.

  • For a twist, add some cooked broccoli or spinach for a pop of color and nutrition.
  • You can substitute the sharp cheddar with other cheeses like Gruyère or mozzarella for different flavor profiles.
  • Leftovers store well in the fridge for up to 3 days and can be reheated in the microwave or oven.
  • This dish pairs wonderfully with a simple green salad for a complete meal.

How To Store It

Got leftovers? Keeping your Au Gratin at peak deliciousness is easy when you follow proper storage methods. These tips will help you maintain flavor, texture, and creaminess for days.

  • Refrigerate in airtight containers: Cool the gratin completely, then transfer leftovers to airtight containers for up to 3 days.
  • Cover tightly: If storing in the original baking dish, press plastic wrap or foil directly on the surface to prevent a dry crust from forming.
  • Reheat gently: Warm individual portions in the microwave or reheat the entire dish at 350°F (175°C) for 15–20 minutes until heated through.
  • Freeze for longer storage: Wrap the cooled gratin in two layers of foil or freezer-safe bags and freeze for up to 2 months; thaw overnight in the fridge before reheating.

Frequently Asked Questions

Here are some of the top questions home cooks ask when making this ham and potato delight:

  • Q: How long does it take to prepare and cook Ham and Potato Au Gratin?

A: It takes about 20 minutes to prepare—peeling and slicing potatoes, dicing ham, shredding cheese, and making the roux—and roughly 1 hour to bake (40 minutes covered, 20 minutes uncovered), for a total of about 1 hour and 20 minutes.

  • Q: Can I use a different type of potato instead of russets?

A: Yes, you can substitute Yukon Gold or red potatoes. Yukon Golds hold their shape well and add a buttery flavor, while reds stay firmer and may require a few extra minutes in the oven if sliced thicker.

  • Q: My cream sauce seems too thin. How can I thicken it properly?

A: Continue cooking the roux-based sauce over medium heat for a few more minutes, whisking constantly until it coats the back of a spoon. If it’s still thin, add a small extra sprinkle of flour, cook for another minute, then whisk in a splash of milk or cream to adjust consistency.

  • Q: Is it possible to assemble this dish ahead of time?

A: You can assemble everything up to the point of baking, cover the dish tightly with foil, and refrigerate for up to 24 hours. Before baking, let it sit at room temperature for 20 minutes and add 5–10 minutes to the baking time if still cold in the center.

  • Q: What storage and reheating methods work best for leftovers?

A: Store cooled leftovers in an airtight container in the refrigerator for up to 3 days. Reheat single portions in the microwave or warm the entire dish in a 350°F oven for about 15–20 minutes, uncovered, until warmed through and bubbly.

  • Q: Can I add vegetables to this Au Gratin for extra nutrition?

A: Absolutely. Fold in lightly steamed broccoli florets or chopped spinach between the potato and ham layers. Ensure vegetables are drained and patted dry to avoid excess moisture.

  • Q: What cheese alternatives can I use instead of sharp cheddar?

A: Gruyère or Fontina melt beautifully for a nutty, creamy flavor, and mozzarella adds gooey stretch. You can also blend two cheeses for complexity—try half Gruyère, half sharp cheddar.

  • Q: How do I achieve a golden-brown, crispy top without burning the dish?

A: Bake covered for the first 40 minutes to cook through, then uncover for the final 20 minutes. If the top browns too quickly, loosely tent foil for the last 5–10 minutes. Position the rack in the center of the oven for even browning.

What Makes This Special

This Ham and Potato Au Gratin works because it balances creamy, cheesy layers with savory ham and a hint of garlic and cayenne, delivering comfort in every bite. The crisp, golden crust gives way to tender potatoes soaked in a velvety sauce—a perfect weeknight treat or impressive side for guests. Feel free to print this article and save it for later, then come back and share your success stories or ask any questions you might have. Your feedback and cooking tales make the kitchen even more fun!

Ham and Potato Au Gratin

Difficulty: Intermediate Prep Time 30 mins Cook Time 60 mins Rest Time 10 mins Total Time 1 hr 40 mins
Calories: 510

Description

A creamy, cheesy blanket wraps thin potato slices and savory ham, transforming into a warm, bubbling bake with a golden crust. Garlic-infused sauce and a hint of cayenne add depth to each comforting bite.

Ingredients

Instructions

  1. Preheat your oven to 375°F (190°C). Grease a 9x13-inch baking dish with a bit of butter or cooking spray.
  2. In a large skillet, melt 4 tablespoons of unsalted butter over medium heat. Once melted, add the minced garlic and sauté for about 1 minute until fragrant.
  3. Stir in the flour and cook for 1-2 minutes, creating a roux. Gradually whisk in the heavy cream and whole milk, ensuring there are no lumps. Continue to cook until the mixture thickens, about 5 minutes.
  4. Add the onion powder, salt, black pepper, and cayenne pepper (if using) to the sauce and stir well. Remove from heat.
  5. In the prepared baking dish, layer half of the sliced potatoes evenly across the bottom. Follow with half of the diced ham, then sprinkle with half of the shredded cheddar cheese.
  6. Pour half of the cream sauce over the first layer of potatoes, ham, and cheese.
  7. Repeat the layering process with the remaining potato slices, ham, and cheese. Pour the remaining cream sauce over the top, ensuring all the potatoes are mostly covered.
  8. Cover the baking dish with aluminum foil and bake in the preheated oven for 40 minutes.
  9. After 40 minutes, remove the foil and bake for an additional 20 minutes, or until the top is golden brown and bubbling.
  10. Once done, remove from the oven and let it sit for about 10 minutes before serving. Garnish with fresh parsley before serving.

Note

  • For a twist, add some cooked broccoli or spinach for a pop of color and nutrition.
  • You can substitute the sharp cheddar with other cheeses like Gruyère or mozzarella for different flavor profiles.
  • Leftovers store well in the fridge for up to 3 days and can be reheated in the microwave or oven.
  • This dish pairs wonderfully with a simple green salad for a complete meal.
Keywords: potato gratin, ham casserole, cheesy potatoes, au gratin recipe, comfort food, baked casserole

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Frequently Asked Questions

Expand All:
How long does it take to prepare and cook Ham and Potato Au Gratin?

It takes about 20 minutes to prepare—peeling and slicing potatoes, dicing ham, shredding cheese, and making the roux—and roughly 1 hour to bake (40 minutes covered, 20 minutes uncovered), for a total of about 1 hour and 20 minutes.

Can I use a different type of potato instead of russets?

Yes, you can substitute Yukon Gold or red potatoes. Yukon Golds hold their shape well and add a buttery flavor, while reds stay firmer and may require a few extra minutes in the oven if sliced thicker.

My cream sauce seems too thin. How can I thicken it properly?

Continue cooking the roux-based sauce over medium heat for a few more minutes, whisking constantly until it coats the back of a spoon. If it’s still thin, add a small extra sprinkle of flour, cook for another minute, then whisk in a splash of milk or cream to adjust consistency.

Is it possible to assemble this dish ahead of time?

You can assemble everything up to the point of baking, cover the dish tightly with foil, and refrigerate for up to 24 hours. Before baking, let it sit at room temperature for 20 minutes and add 5–10 minutes to the baking time if still cold in the center.

What storage and reheating methods work best for leftovers?

Store cooled leftovers in an airtight container in the refrigerator for up to 3 days. Reheat single portions in the microwave or warm the entire dish in a 350°F oven for about 15–20 minutes, uncovered, until warmed through and bubbly.

Can I add vegetables to this Au Gratin for extra nutrition?

Absolutely. Fold in lightly steamed broccoli florets or chopped spinach between the potato and ham layers. Ensure vegetables are drained and patted dry to avoid excess moisture.

What cheese alternatives can I use instead of sharp cheddar?

Gruyère or Fontina melt beautifully for a nutty, creamy flavor, and mozzarella adds gooey stretch. You can also blend two cheeses for complexity—try half Gruyère, half sharp cheddar.

How do I achieve a golden-brown, crispy top without burning the dish?

Bake covered for the first 40 minutes to cook through, then uncover for the final 20 minutes. If the top browns too quickly, loosely tent foil for the last 5–10 minutes. Position the rack in the center of the oven for even browning.

Isabela Moreno

Food and Lifestyle Blogger

 Hello! I’m Isabela Moreno, the heart and hands behind YummyCasa.com — a cozy place where homemade meals bring family and friends closer together.

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