The aroma of bubbling cheese and savory ham wafts through the air, conjuring memories of cozy family gatherings. My heart always warms when I take that first bite of Ham and Potato Au Gratin, a dish that perfectly marries tender potatoes and smoky ham in a rich, creamy sauce. This comforting recipe is not just a fantastic way to utilize leftover ham; it doubles as an easy weeknight dinner that can effortlessly impress your guests during the holidays. Imagine serving this hearty gem at your next meal, complete with its golden-brown top, inviting everyone to gather around the table. Are you ready to turn simple ingredients into a heartfelt feast that will have your loved ones asking for seconds?

Why is this recipe a must-try?

Comforting and Hearty: This Ham and Potato Au Gratin is the ultimate cozy dish, perfect for chilly nights. Guilt-Free Indulgence: With simple ingredients that transform into a rich, creamy sauce, you can enjoy a hearty meal without the hassle. Leftover Magic: Perfect for using up leftover ham, reducing food waste while delighting your taste buds. Crowd-Pleaser: Its bubbling, golden top will have everyone flocking to the table, making it a star at family gatherings or holiday dinners. Endless Variations: Whether you prefer a veggie boost or a cheese swap, this recipe easily adapts to your palate. Pair it with a fresh green salad for a well-rounded meal, or check out our Garlic Butter Beef for another delicious option!

Ham and Potato Au Gratin Ingredients

For the Casserole
• Potatoes – Choose Yukon Gold or Russet for a creamy texture that holds up beautifully.
• Cooked Ham – The star ingredient that gives this dish its savory flavor; perfect for using up leftovers.
• Onion – Adds a touch of sweetness; for a milder taste, feel free to substitute with shallots.

For the Cheese Sauce
• Butter – This rich base enhances the overall flavor; you can opt for olive oil for a lighter sauce.
• All-purpose Flour – Thickens the sauce perfectly; try using cornstarch for a gluten-free version.
• Milk – Achieves a creamy consistency; whole milk is best, but almond milk works as a lighter alternative.
• Salt – Adjust to taste for optimal flavor enhancement.
• Pepper – Provides a nice warmth; black pepper is preferred, though white pepper can be used for a subtle look.
• Paprika – Infuses a gentle smokiness; swap in cayenne if you desire a bit more heat.

For the Topping
• Shredded Sharp Cheddar Cheese – Contributes creaminess and flavor depth; consider Gruyère or Monterey Jack for variety.
• Grated Parmesan Cheese – The crown jewel for added umami and a crunchy golden top.

Get ready for a cozy evening with this delightful Ham and Potato Au Gratin, a dish that turns simple ingredients into a comforting feast!

Step‑by‑Step Instructions for Ham and Potato Au Gratin

Step 1: Preheat the Oven
Begin by preheating your oven to 350°F (175°C) to ensure it’s ready for baking your delicious Ham and Potato Au Gratin. While the oven heats, grease a 2-quart casserole dish with butter or cooking spray to prevent sticking. This simple preparation step is crucial for achieving that bubbly and golden crust you’ll love.

Step 2: Create the First Layer
Once your casserole dish is greased, layer half of the sliced potatoes at the bottom. On top of the potatoes, evenly distribute half of the cooked ham and chopped onions. This layering process builds the foundation of flavors in your Ham and Potato Au Gratin, so take your time to arrange them neatly and uniformly for the best results.

Step 3: Complete the Layers
After the first layer, repeat the process by adding the remaining potato slices over the ham and onion mixture. Follow with the rest of the ham and onions, completing your layers. This creates a hearty and flavorful base, ensuring that every bite of your au gratin will be equally delicious and satisfying.

Step 4: Make the Cheese Sauce
In a medium saucepan, melt 3 tablespoons of butter over medium heat. Stir in an equal amount of all-purpose flour, cooking for about 1 minute until bubbly and slightly golden. This forms a roux, which is the starting point of your creamy sauce, providing thickness and flavor to the Ham and Potato Au Gratin.

Step 5: Whisk in the Milk
Gradually whisk in 2 cups of milk into the roux, stirring continuously to prevent lumps from forming. Simmer this mixture on medium-low heat until it thickens—about 5–7 minutes—until it coats the back of a spoon. Season your sauce with salt, pepper, and paprika, allowing these spices to enhance the overall flavor of the dish.

Step 6: Add the Cheese
Once thickened, remove the saucepan from heat and stir in 2 cups of shredded sharp cheddar cheese until fully melted and blended into a creamy delight. This cheese sauce is the heart of your Ham and Potato Au Gratin, ensuring a rich and satisfying texture that envelops each layer beautifully.

Step 7: Combine Layers and Sauce
Pour the creamy cheese sauce evenly over your layered potatoes, ham, and onions in the casserole dish. Make sure every bit of potato and ham is coated in the luscious cheese mixture. This step is essential for achieving that creamy and flavorful consistency throughout the dish.

Step 8: Bake Covered
Cover the casserole dish with aluminum foil, ensuring it fits snugly to trap steam, and place it in the preheated oven. Bake for 60 minutes, allowing the flavors to meld and the potatoes to become tender. This covered phase will help cook the ingredients evenly before the final crisping.

Step 9: Uncover and Brown the Top
After baking for an hour, carefully remove the foil and sprinkle ½ cup of grated Parmesan cheese evenly across the top. Return the dish to the oven and bake uncovered for an additional 20–30 minutes, until the top is golden-brown and bubbling. This is when you’ll achieve that irresistible texture and flavor.

Step 10: Rest Before Serving
Once your Ham and Potato Au Gratin is perfectly golden and bubbly, take it out of the oven and let it rest for about 5–10 minutes. This resting period allows the layers to settle, making it easier to serve. Prepare for delightful bites filled with creamy goodness and hearty flavors!

What to Serve with Ham and Potato Au Gratin

Pairing your Ham and Potato Au Gratin with the right sides amplifies its comforting flavors, creating a full and satisfying meal experience.

Fresh Green Salad: A crisp salad adds a refreshing contrast, cutting through the richness of the dish with its lightness and crunch. Toss mixed greens with a zesty vinaigrette to invigorate each bite.
Garlic Bread: This toasty, buttery side acts as a perfect companion, soaking up the creamy cheese sauce while delivering a satisfying crunch that complements the soft layers of the au gratin.
Roasted Vegetables: Colorful roasted veggies like carrots, Brussels sprouts, or broccoli bring a burst of color and nutritious balance, creating a well-rounded plate that appeals to both taste and presentation.
Creamy Coleslaw: The cool, creamy slaw offers a refreshing tang that lifts the heaviness of the dish, with a delightful crunch that enhances the dining experience.
Buttery Corn on the Cob: Sweet, juicy corn on the cob is an all-time favorite, adding a pop of sweetness and a tender bite that pairs beautifully with the savory ham and potatoes.
Chardonnay: A chilled glass of Chardonnay brings notes of apple and citrus, harmonizing with the creamy textures while enhancing the overall flavor profile of your meal.
Apple Crisp: End your meal on a sweet note with this warm, spiced dessert that balances the savory goodness of the au gratin, creating a delightful ending everyone will love.

Consider these comforting pairings to elevate your Ham and Potato Au Gratin into a joyful gathering experience, celebrating the warmth of home-cooked meals!

Expert Tips for Ham and Potato Au Gratin

Layer Evenly: Ensure you layer the ingredients uniformly to promote consistent cooking and flavor distribution throughout your Ham and Potato Au Gratin.
Rest Before Serving: Allow the dish to rest for about 5-10 minutes post-baking. This helps the layers meld together, resulting in easier serving and enhanced flavor.
Keep an Eye on the Bake: Watch the au gratin closely in the final baking minutes. Check for an enticing golden-brown topping to prevent burning while achieving that perfect crispiness.
Use Fresh Ingredients: Opt for fresh potatoes and quality ham for the best taste. Fresh ingredients enhance the heartiness of the dish, making it more comforting and delightful.
Experiment with Cheeses: Don’t hesitate to swap cheeses for variety; Gruyère or Monterey Jack can add unique flavors while keeping the creaminess intact in your au gratin.

Make Ahead Options

These Ham and Potato Au Gratin are perfect for busy home cooks looking to save time during meal prep! You can assemble the entire dish up to 24 hours in advance by layering the potatoes, ham, and onions, then pouring over the cheese sauce. Cover it tightly with plastic wrap before refrigerating to maintain freshness and prevent drying out. When it’s time to serve, simply bake it in the preheated oven for about 60 minutes, followed by 20–30 minutes uncovered to finish it off with a golden-brown crust. By prepping ahead, you’ll have a warm, comforting meal ready with minimal effort!

Ham and Potato Au Gratin Variations

Feel free to explore these delightful twists that will make your Ham and Potato Au Gratin truly yours!

Cheese Blend: Mix cheeses like mozzarella or Gruyère for a unique flavor profile and creaminess. This simple swap opens up a world of cheesy goodness!
Veggie Boost: Add spinach, broccoli, or cauliflower for a nutritional punch. Incorporating veggies not only adds color but also makes your dish a bit healthier.
Chicken Alternative: Swap cooked ham for shredded chicken or turkey for a lighter option. This variation makes the dish adaptable for any leftover meat you have.
Dairy-Free Delight: Use almond milk and a dairy-free cheese substitute for a delicious dairy-free version. It’s a great way to cater to lactose-intolerant guests without sacrificing flavor.
Herb Infusion: Add fresh herbs like thyme or rosemary into the cheese sauce for an aromatic lift. A dash of freshness will elevate your au gratin to new heights!
Spicy Kick: Incorporate diced jalapeños or a sprinkle of red pepper flakes for heat. This adds an exciting twist that makes every bite burst with flavor.
Truffle Oil Drizzle: For a gourmet touch, drizzle truffle oil on top before baking. Just a little will transform your dish into a luxurious experience.
Bacon Crumble: Top with crispy bacon bits for an added crunch and flavor contrast. This smoky goodness pairs perfectly with the creamy sauce and potatoes!

Embracing these variations ensures that your Ham and Potato Au Gratin remains a family favorite! And if you’re looking for more inspiration, check out my recipes for Ham Cheese Butter and Shrimp Corn Bisque to enhance your cooking repertoire further!

How to Store and Freeze Ham and Potato Au Gratin

Fridge: Store leftovers in an airtight container in the fridge for up to 3 days. Be sure to let the dish cool completely before sealing it to maintain freshness.

Freezer: For longer storage, freeze in a suitable container or tightly wrap with foil. Ham and Potato Au Gratin can be frozen for up to 2 months.

Reheating: To reheat, thaw overnight in the fridge, then cover with foil and warm in a preheated oven at 350°F (175°C) until heated through, around 20-25 minutes.

Make-Ahead: You can assemble the dish ahead of time and keep it in the fridge for up to 24 hours before baking. This allows the flavors to meld beautifully in the Ham and Potato Au Gratin.

Ham and Potato Au Gratin Recipe FAQs

What type of potatoes should I use for the Ham and Potato Au Gratin?
I recommend using Yukon Gold or Russet potatoes for their creamy texture and ability to hold up well during baking. These varieties help create that perfect, tender bite that complements the savory ham beautifully.

How long can I store leftovers in the fridge?
Store your Ham and Potato Au Gratin leftovers in an airtight container for up to 3 days. Just remember to allow the dish to cool completely before sealing it, which helps maintain its freshness and flavor over time.

Can I freeze Ham and Potato Au Gratin for later use?
Absolutely! To freeze, cool the dish completely, then transfer it to a suitable container or wrap it tightly with foil. It can be frozen for up to 2 months. When ready to enjoy, let it thaw overnight in the fridge before reheating.

What is the best way to reheat the baked au gratin?
For the best results, after thawing overnight, cover your Ham and Potato Au Gratin with foil and warm it in a preheated oven at 350°F (175°C). It should take about 20-25 minutes to heat through, ensuring it stays creamy and delicious.

Can I make this dish ahead of time?
Yes! You can assemble the Ham and Potato Au Gratin in advance and keep it in the fridge for up to 24 hours before baking. This allows the flavors to meld beautifully, ensuring an even tastier outcome when baked. Just remember to increase the baking time if it’s chilled from the fridge.

Are there any dietary considerations for this recipe?
If you’re catering to dietary restrictions, feel free to substitute butter with olive oil for a lighter option, or use gluten-free flour to thicken the sauce. Additionally, you can opt for almond milk instead of regular milk to create a dairy-free version, making this comforting dish accessible for various dietary preferences.