Amazing Ham & Potato Au Gratin Bake: 1 Hour

Name: Amazing Ham & Potato Au Gratin Bake: 1 Hour
Prep time: 20 min
Cook time: 1 h
Total time: 1 h 20 min
Cuisine: American
Ingredients: 2 pounds potatoes, peeled and thinly sliced; 1 pound cooked ham, diced; 1 cup shredded cheddar cheese; 1/2 cup shredded Gruyere cheese; 1 cup milk; 1/2 cup heavy cream; 2 tablespoons butter; 2 tablespoons all-purpose flour; 1/4 teaspoon nutmeg; Salt and pepper to taste

By:

Annabelle

September 6, 2025

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Oh, hello there! Come on in, make yourself comfy. I’ve got something truly special to share with you today – my absolute favorite Ham & Potato Au Gratin Bake. Seriously, this dish is like a warm hug in casserole form. It’s the kind of thing that makes the whole house smell amazing and brings everyone running to the table. I remember making this for the first time for a family get-together, and it was gone in a flash! The way the potatoes get so tender and the cheese gets all melty and bubbly… it’s just pure comfort food magic. It’s become our go-to for a hearty family supper, and I just know you’re going to love it as much as we do.

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Why You’ll Love This Ham & Potato Au Gratin Bake

Seriously, this Ham & Potato Au Gratin Bake is a winner for so many reasons. It’s just one of those dishes that makes everyone happy, no matter the occasion. Here’s why it’s a staple in my kitchen:

It’s surprisingly quick and easy to whip up, even on a busy weeknight. You’ll be amazed at how simple it is!
The flavor is out of this world – so wonderfully rich, creamy, and loaded with that cheesy goodness everyone craves.
It’s perfect for just about anything! Whether it’s a casual Tuesday dinner or a more festive gathering, this casserole fits right in.
Honestly, it’s a total crowd-pleaser. This cheesy casserole is always a hit, making it a reliable choice for a satisfying family supper.

Essential Ingredients for Your Ham & Potato Au Gratin Bake

Alright, let’s talk about what you’ll need to make this incredible Ham & Potato Au Gratin Bake. It’s pretty straightforward, but using good ingredients really makes a difference! You’ll want about 2 pounds of potatoes, and make sure you peel them first. Then, slice them thinly, like about 1/8th of an inch – that helps them cook evenly. For the ham, grab 1 pound of already cooked ham and dice it up into nice little 1/2-inch pieces. For the cheesy part, we’re using 1 cup of shredded cheddar cheese and 1/2 cup of shredded Gruyere. Oh, and for the creamy sauce, you’ll need 1 cup of milk, 1/2 cup of heavy cream, 2 tablespoons of butter, and 2 tablespoons of all-purpose flour. A little pinch of nutmeg is key for that cozy flavor, plus some salt and pepper to taste. That’s pretty much it!

Ingredient Notes and Substitutions

Now, about those ingredients – I love using Yukon Gold or red potatoes because they hold their shape so well and have a lovely creamy texture. But honestly, any good all-purpose potato will work just fine! If you’re not a fan of Gruyere, you could totally swap it for more cheddar or even some Swiss cheese; it’ll still be delicious. And for the ham, any cooked ham works – leftover holiday ham is perfect, or you can grab some diced ham from the deli counter. This cheesy casserole is pretty forgiving, so feel free to play around a bit!

Step-by-Step Guide to Making Your Ham & Potato Au Gratin Bake

Alright, let’s get cooking! Making this Ham & Potato Au Gratin Bake is really quite straightforward, and honestly, it’s the fun part where all those yummy ingredients come together. Just follow along, and you’ll have a fantastic meal on the table in no time!

Preparing the Baking Dish and Oven

First things first, let’s get the oven all warmed up. You’ll want to preheat it to 375°F (190°C). While that’s heating, grab your baking dish – a standard 9×13 inch one is perfect. Give it a good grease with a little butter or cooking spray so nothing sticks. This little step makes cleanup so much easier later!

Crafting the Creamy Cheese Sauce

Now for the magic sauce! Grab a saucepan and melt your 2 tablespoons of butter over medium heat. Once it’s all melty, whisk in the 2 tablespoons of flour. Let that cook for just about a minute, stirring it around. This is called a roux, and it helps thicken our sauce. Then, slowly, and I mean *slowly*, whisk in your milk and cream. Keep whisking gently until it starts to bubble and thicken up nicely. Once it’s nice and smooth, take it off the heat. Stir in your cheddar and Gruyere cheeses, along with that pinch of nutmeg, salt, and pepper. Keep stirring until all those lovely cheeses are melted and you’ve got a super smooth, dreamy sauce. Yum!

Assembling the Layers for the Ham & Potato Au Gratin Bake

Okay, time to build our beautiful bake! You’ll start by spreading about half of those thinly sliced potatoes evenly in the bottom of your prepared baking dish. Next, scatter half of your diced ham right over the potato layer. Then, pour about half of that gorgeous cheese sauce you just made all over the ham and potatoes. We’re going to repeat those layers: the remaining potatoes, then the rest of the ham, and finally, pour the rest of that creamy cheese sauce over the top. Make sure everything is nicely covered!

Baking and Finishing Your Ham & Potato Au Gratin Bake

Now, we let the oven do its thing! Cover the baking dish tightly with foil. Pop it into your preheated oven and let it bake for about 45 minutes. This is when the potatoes get nice and tender. After 45 minutes, carefully remove the foil. You want that top to get all golden and bubbly, so bake it uncovered for another 15 to 20 minutes. You’ll know it’s ready when the potatoes are fork-tender and the top is beautifully browned. The last crucial step is to let it sit for about 10 minutes before you serve it. This lets all those delicious juices settle in, making it even better!

Equipment Needed for This Ham & Potato Au Gratin Bake

To whip up this delicious Ham & Potato Au Gratin Bake, you won’t need a ton of fancy gadgets. Just a few everyday kitchen essentials will do the trick! You’ll definitely need a good saucepan for making that dreamy cheese sauce, and a sturdy whisk is a must for getting it nice and smooth. A sharp knife and a cutting board are essential for prepping those potatoes and ham. And of course, you’ll need your trusty 9×13 inch baking dish. Oh, and a spatula or spoon for layering and serving will come in handy!

Tips for the Perfect Ham & Potato Au Gratin Bake

Want to make your Ham & Potato Au Gratin Bake absolutely perfect every single time? I’ve picked up a few tricks along the way that really make a difference! For perfectly cooked potatoes, slicing them thinly and evenly is key – aim for about 1/8th of an inch. This ensures they all cook at the same rate. To prevent a watery sauce, make sure your roux (that flour and butter mixture) cooks for a full minute before adding the liquids, and don’t rush the simmering process; let it thicken properly. For that gorgeous golden-brown topping, the last 15-20 minutes uncovered is crucial. If it’s browning too quickly, you can always loosely tent it with foil for a bit longer!

Serving Suggestions for Your Ham & Potato Au Gratin Bake

This hearty Ham & Potato Au Gratin Bake is practically a meal in itself, but it pairs wonderfully with some fresh additions! A simple green salad with a light vinaigrette cuts through the richness perfectly. Steamed green beans or a side of roasted broccoli also make lovely, healthy companions. For a bit of brightness, some crusty bread is always a good idea for soaking up any extra cheesy goodness. And to drink? A crisp white wine or even just a cold glass of milk rounds out this comforting family supper beautifully!

Storing and Reheating Leftover Ham & Potato Au Gratin Bake

Got some delicious leftover Ham & Potato Au Gratin Bake? Lucky you! For storing, just let it cool down a bit, then cover it tightly with plastic wrap or transfer it to an airtight container. It’ll keep nicely in the fridge for about 3-4 days. When you’re ready to reheat, the best way is to pop it back into a moderate oven (around 350°F or 175°C) until it’s heated through. You can also microwave it, but the oven gives you that lovely bubbly topping again!

Frequently Asked Questions about Ham & Potato Au Gratin Bake

Got some burning questions about my favorite Ham & Potato Au Gratin Bake? I’ve got you covered! Here are some things folks often ask:

Q1. Can I make this Ham & Potato Au Gratin Bake ahead of time?
Absolutely! This is one of my favorite make-ahead meals. You can assemble the entire casserole, cover it tightly, and keep it in the fridge for up to 24 hours before baking. Just add a few extra minutes to the covered baking time if it’s going in straight from the fridge.

Q2. What are the best potatoes for an au gratin?
For the best results in this au gratin, I really like using Yukon Golds or red potatoes. They hold their shape beautifully when baked and have a wonderful creamy texture that makes this dish so satisfying. Just make sure to slice them thinly and evenly!

Q3. How can I make this a lighter version of the cheesy casserole?
If you’re looking to lighten things up a bit in this cheesy casserole, you can try using a reduced-fat milk and a lighter cream or even half-and-half instead of heavy cream. You could also use a reduced-fat shredded cheese, though it might not melt quite as luxuriously. And of course, serving it with a big salad helps!

Q4. Can I freeze this ham and potatoes casserole?
While this delicious ham and potatoes dish freezes okay, the texture of the potatoes can sometimes get a little softer after thawing and reheating. If you do want to freeze it, I’d recommend freezing it *before* baking. Thaw it completely in the refrigerator before baking as directed, adding a bit of extra time if needed.

Nutritional Estimate for Ham & Potato Au Gratin Bake

Just a heads-up, the nutritional information for this delightful Ham & Potato Au Gratin Bake is an estimate. It can change depending on the exact brands of ingredients you use and how you might tweak the recipe. So, think of these numbers as a general guide rather than a strict rule!

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