Amazing 7-hour scalloped potatoes and ham

January 11, 2026
Written By Katherine Hayes

Katherine "Katie" Hayes is a food scientist and professional recipe developer with over a decade of experience creating delicious and reliable recipes for well-known American brands. Her passion is to make baking and cooking simple and joyful for everyone. She combines her scientific knowledge with a love for home cooking to create the foolproof recipes you'll find here on Frosted Fancies. When she's not in the kitchen, you can find her exploring local farmers' markets or enjoying time with her family.

Hello there, and welcome to Frosted Fancies! I’m Katie, and I’m so happy you stopped by my kitchen today. If you’re looking for a dish that screams comfort, tastes incredible, and uses up those random bits of leftover ham you have hiding in the fridge, you are in the right place! We are making my Ultimate Creamy Slow Cooker Scalloped Potatoes and Ham Casserole. Forget fussing over the stove or juggling oven space during the holidays. Because of my background creating foolproof recipes for major brands, I’ve perfected this version to come out incredibly rich and cheesy every single time, right in the slow cooker. This dish is pure magic!

Why This Ultimate Creamy Slow Cooker Scalloped Potatoes and Ham Casserole Works

I know you have options when it comes to making a big potato bake, but trust me, the slow cooker changes the game for this scalloped potatoes and ham recipe. It takes all the worry right out of the equation, which is why I love it so much for busy nights or when the oven is already full of turkey!

  • Set It and Forget It Convenience: Since we’re using the Crock Pot, your hands-on time is minimal—it’s such an easy ham and potato casserole to assemble. This frees up your stovetop and oven, making it a huge win for holiday meal prep! It’s truly one of the best leftover ham recipes because you aren’t hovering over a baking dish.
  • Perfectly Tender Potatoes Every Time: Baking potatoes in a standard dish can sometimes lead to dry edges, but the moist, contained environment of the slow cooker coaxes those slices until they are unbelievably creamy. It ensures that this favorite of all comfort food casseroles melts in your mouth.

Gathering Ingredients for Your Scalloped Potatoes and Ham

Okay, let’s get our supplies ready! As you know from my test kitchen days, precision matters, especially when you want the absolute best cheesy scalloped potatoes recipe. Gathering exactly what we need now makes the layering process smooth later on. Don’t skip the specific details I wrote below—they are key to that luxurious, creamy texture!

The Starches and Savory Components

  • We start with 3 pounds of Russet potatoes. They must be peeled and sliced very thinly—I mean paper-thin!
  • You need 1.5 cups of fully cooked ham, diced up nicely. This is the perfect way to use up holiday leftovers.
  • Don’t forget one small yellow onion, sliced thinly to melt right into the sauce.

Crafting the Creamy Cheese Sauce Base

This sauce is what makes them so good! Grab 1/4 cup of flour—this is our thickener—along with 1 teaspoon of salt, 1/2 teaspoon of pepper, and just 1/4 teaspoon of paprika for color. Whisk that into 2 cups of milk and 1 cup of heavy cream. Finally, we need 2 tablespoons of melted unsalted butter stirred in. This thickening step ensures such great creamy scalloped potatoes with ham.

The Cheeses for Maximum Flavor

Cheese choice makes all the difference! I want you to use 1 cup of shredded sharp cheddar and 1/2 cup of shredded Gruyere cheese. While Gruyere isn’t smoked Gouda, its nutty, earthy flavor complements salty ham so wonderfully, bringing a touch of elegance to this comfort food.

Step-by-Step Instructions for Slow Cooker Scalloped Potatoes and Ham

Now for the fun part—assembly! The beauty of using your Crock Pot for this scalloped potatoes and ham recipe is that we aren’t pre-cooking anything. Just toss it all in there to let the magic happen. I promise, if you follow these steps exactly, you’ll end up with the most amazing crock pot potato casserole with ham.

Preparing the Slow Cooker and Sauce Base

First things first, give the inside of your slow cooker insert a good coat of spray or butter—we don’t want anything sticking! Now, switch gears to the sauce. In a small bowl, dust in your flour, salt, pepper, and paprika, then whisk it around. In a separate, larger bowl, whisk your milk and heavy cream together until they look happy and blended.

This is critical: Very slowly, whisk that flour blend into your liquids until it’s totally smooth. We cannot have lumps if we want a velvety sauce! Once that’s done, stir in the melted butter. You’ve just made the foundation for our rich sauce!

Layering the Scalloped Potatoes and Ham

Time to build those beautiful layers in the cooker. Start by placing half of your thinly sliced potatoes in the bottom. Top those with half of your diced ham and half of your sliced onion. Now, pour half of that creamy sauce right over the top. Then, sprinkle everything with half of your mixed cheddar and Gruyere cheese.

Just repeat that whole process again! We do the second half of the potatoes, the rest of the ham and onion, the rest of the sauce, and the final sprinkle of cheese on top. Make sure it looks evenly distributed—this is what guarantees every scoop of this easy ham and potato casserole is perfect.

Cooking Time and Finishing Touches

Cover up that slow cooker! We let this cook low and slow. Set it to LOW for 6 to 7 hours, or if you’re in a rush, you can use HIGH for 3 to 4 hours. You know it’s done when a fork slides right through a potato slice without any resistance.

Here’s a tip from my test kitchen days for avoiding watery results: About 15 minutes before you plan to serve, take the lid off and let it go uncovered. This lets some of that extra steam escape, thickening the sauce just perfectly. Please, whatever you do, don’t stir it; just let it reduce naturally! This step ensures you get that beautiful, thick sauce, just like you’d see on a great slow cooker scalloped potatoes and ham pin.

Expert Tips for the Best Scalloped Potatoes and Ham

Even though this recipe is designed for the slow cooker, a couple of little tricks from my professional development days can elevate this classic dish from good to absolutely unforgettable. We want that beautiful, creamy casserole texture, and that starts long before the slow cooker even turns on!

Achieving Uniform Potato Slices

If you take away just one thing from this section, let it be this: use a mandoline slicer for your potatoes! Grandma used to chop mine by hand, but honestly, getting them all exactly 1/8 of an inch thick is nearly impossible by hand. Uniform size is everything here. If some slices are thick and others thin, the thin ones turn to mush while the thick ones are still resisting your fork. For that perfect, even tenderness found in a beautiful baked ham and potato gratin, a consistent slice is non-negotiable.

Make Ahead Scalloped Potatoes and Ham Assembly

This is a fantastic recipe for when you need to plan ahead, especially around big family dinners. You can absolutely assemble all of those lovely layers—potatoes, ham, cheese, sauce—the night before you plan to serve them. Just grease your slow cooker, layer everything up according to the instructions, secure the lid, and pop the whole thing in the refrigerator.

The only catch? Since the ingredients start out cold, you need to give them a little extra time to come up to temperature and cook through. Just add about 30 minutes to your total cooking time on Low when you’re making this make ahead scalloped potatoes assembly.

Variations on Your Scalloped Potatoes and Ham

One thing I learned perfecting recipes behind the scenes is that a solid base recipe should always be flexible! This slow cooker scalloped potatoes and ham method is so reliable, you can totally play around with it. If you’ve made it a couple of times and want to jazz it up for a special occasion, I have a couple of ideas that just sing.

Cheese Substitutions for a New Flavor Profile

The cheddar/Gruyere combo is fantastic, but you can easily pivot here. Since I know people search for gourmet flavors, try swapping out that Gruyere for smoked Gouda! It adds this subtle, smoky richness that is just amazing when paired with salty ham. Or, if you prefer something tangier, Swiss cheese offers a completely different, classic profile for your cheesy scalloped potatoes recipe.

Adding Depth to Your Comfort Food Casseroles

If you want to elevate this beyond a standard weeknight meal—maybe for one of those coveted holiday potato side dishes—you need a little extra something in that creamy sauce. A tiny pinch of ground nutmeg blends beautifully with the cream and potatoes. It sounds weird, but trust me; it adds warmth! Also, tossing in some fresh chopped chives or thyme right before serving really perks up the whole dish.

Serving Suggestions for Scalloped Potatoes and Ham

This rich, cheesy casserole is definitely the star of the show, but every main event needs a supporting cast! Since this scalloped potatoes and ham dish is so hearty and satisfying, you want to pair it with something bright and fresh to cut through all that creamy goodness. Think simple, fresh sides.

For a truly balanced plate, try serving it alongside some lightly steamed green beans or maybe just a simple green salad tossed with a bright vinaigrette. This keeps the meal feeling complete without weighing everyone down. It’s the perfect centerpiece for any hearty family dinner idea, especially when you need something comforting that still feels special.

Storage and Reheating Creamy Scalloped Potatoes and Ham

The best part about a huge casserole like this scalloped potatoes and ham? The leftovers! They taste even better the next day, I swear. When you’ve got finished leftovers, you need to treat them right so they retain that amazing creamy texture we worked so hard for. Always let the casserole cool down slightly before you transfer it to airtight containers. You can safely store this in the fridge for about three or four days.

When it comes time to reheat, you have options, and I’ve tested them all! If you’re reheating a small portion, the microwave is quick, but you might need to add a tiny splash of milk or cream to wake up the sauce, since it gets super thick when chilled. For the best results, especially if you’re heating up a remaining half, pop it back into a baking dish, cover it with foil, and heat at 350°F until warmed through completely. If you’re using the slow cooker again, just set it on LOW and stir occasionally until it’s ready to serve. Reheating gently is the secret to keeping those potatoes perfectly tender for your next scoop of easy ham and potato casserole!

Frequently Asked Questions About Scalloped Potatoes and Ham

I always get questions after people try this recipe for the first time—which is great! It means you’re getting hands-on, and that’s what I love to see. Here are a few things I hear most often about making this scalloped potatoes and ham masterpiece in the slow cooker.

Can I use raw potatoes instead of pre-cooking them for this scalloped potatoes and ham recipe?

Absolutely yes! That’s the whole point here. You do not need to pre-cook them at all. If you look back a bit, I mentioned how crucial it is to slice them thinly—about 1/8 of an inch. Because the slow cooker maintains such a consistent, gentle heat over many hours, those raw slices cook perfectly right in that delicious sauce. This method is what makes it such a fantastic classic scalloped potatoes recipe!

What is the difference between scalloped potatoes and au gratin?

That’s a classic culinary question! Historically, true scalloped potatoes were only made with a cream or milk sauce—no cheese baked in! Once you start adding cheese into that creamy sauce and on top, technically, you’ve made potatoes au gratin. But honestly, who cares about names when it tastes this good? Since most folks search for cheesy scalloped potatoes recipe or a baked ham and potato gratin, I use the term scalloped potatoes and ham because it covers what you’re craving, which is that cheesy, creamy bake!

How do I ensure my slow cooker scalloped potatoes and ham sauce thickens properly?

This is where my food science background helps! The key to thickness is the whisked flour and liquid combination—that’s your roux base working its magic. It happens slowly, but it happens! The other critical step is the very end: once the potatoes are tender, you absolutely must remove the lid for the last 15 minutes of cooking. That allows the steam to escape. If the steam stays trapped, the sauce stays thin. Let it breathe, and you’ll get that perfect, velvety coating across your potatoes and ham.

Estimated Nutritional Snapshot for Scalloped Potatoes and Ham

Now, I always like to give a little peek behind the curtain regarding nutrition. I’m a scientist by training, so while I was developing this recipe, I ran the numbers just to see where we landed with this amazing scalloped potatoes and ham casserole. Remember, these figures are just an estimate based on the exact ingredients listed above, assuming we get 8 healthy servings out of the entire slow cooker batch.

Because we use heavy cream and good cheese, this is definitely a comfort food dish, not a light salad! But honestly, sitting down to a plate of this rich, cheesy goodness is totally worth it. For anyone keeping track, here is the estimated breakdown per serving. I focused on the big ones: calories, fat, carbs, and protein, just like you’d expect from a big, satisfying bowl of my family favorite potato casserole.

  • Calories: Approximately 380
  • Total Fat: About 18 grams
  • Carbohydrates: Around 40 grams
  • Protein: Roughly 18 grams

It’s a hearty meal that sticks to your ribs! That protein and fat content really explains why this is such a satisfying dish for a main course or a filling holiday potato side dish.

Share Your Family Favorite Potato Casserole Creations

Now that you’ve got the ultimate guide to making the creamiest, cheesiest scalloped potatoes and ham in your Crock Pot, I truly want to hear from you!

When you make this recipe, whether it’s for a special holiday dinner or just because you had some leftover ham that needed a job, I want to see your results! Did you use smoked Gouda? Did you try assembling it the night before? Don’t be shy!

Please let me know how it turned out right down in the comments below. Leaving a rating helps other home cooks trust the recipe, which I really appreciate. I read every single comment, and seeing your family enjoying this hearty casserole makes all the recipe testing totally worth it. I can’t wait to see your gorgeous, golden-baked, or slow-cooked potato creations!

If you snapped a picture of your finished classic scalloped potatoes with ham, feel free to tag me on social media—it always brightens my day! Happy cooking, friends!

Print

Ultimate Creamy Slow Cooker Scalloped Potatoes and Ham Casserole

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

No reviews

Make this creamy, cheesy scalloped potatoes and ham casserole in your slow cooker for an easy, comforting family dinner or holiday side dish. This recipe uses simple ingredients for a rich, satisfying bake.

  • Author: katiehayes
  • Prep Time: 25 min
  • Cook Time: 6 hours 30 min
  • Total Time: 6 hours 55 min
  • Yield: 8 servings 1x
  • Category: Dinner
  • Method: Slow Cooking
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

Scale
  • 3 lbs Russet potatoes, peeled and thinly sliced
  • 1.5 cups fully cooked ham, diced
  • 1 small yellow onion, thinly sliced
  • 1 cup shredded sharp cheddar cheese
  • 1/2 cup shredded Gruyere cheese
  • 1/4 cup all-purpose flour
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/4 teaspoon paprika
  • 2 cups milk (whole or 2%)
  • 1 cup heavy cream
  • 2 tablespoons unsalted butter, melted

Instructions

  1. Lightly grease the inside of your slow cooker insert with cooking spray or butter.
  2. In a small bowl, whisk together the flour, salt, pepper, and paprika.
  3. In a separate large bowl, whisk together the milk and heavy cream until combined.
  4. Gradually whisk the flour mixture into the milk mixture until smooth. Stir in the melted butter. This is your cheese sauce base.
  5. Layer half of the sliced potatoes in the bottom of the slow cooker. Top with half of the diced ham and half of the sliced onion.
  6. Pour half of the cream sauce mixture evenly over the layers. Sprinkle with half of the shredded cheddar and Gruyere cheese.
  7. Repeat the layers: remaining potatoes, remaining ham, remaining onion, remaining cream sauce, and remaining cheese.
  8. Cover the slow cooker and cook on LOW for 6 to 7 hours, or on HIGH for 3 to 4 hours, until the potatoes are tender when pierced with a fork.
  9. About 15 minutes before serving, remove the lid and let the excess liquid reduce slightly if the sauce seems too thin. Do not stir.
  10. Serve this hearty ham and potato casserole hot.

Notes

  • For best results, slice potatoes uniformly thin, about 1/8 inch thick. A mandoline slicer works well for this.
  • If you do not have leftover ham, you can use fresh diced ham, but cook it lightly before adding it to the layers.
  • You can prepare the layers the night before, cover, and refrigerate. Add an extra 30 minutes to the cooking time when cooking from cold.
  • This recipe works well as a make ahead scalloped potatoes option if you assemble it and bake it the next day.

Nutrition

  • Serving Size: 1 serving
  • Calories: 380
  • Sugar: 5
  • Sodium: 750
  • Fat: 18
  • Saturated Fat: 10
  • Unsaturated Fat: 8
  • Trans Fat: 0.5
  • Carbohydrates: 40
  • Fiber: 3
  • Protein: 18
  • Cholesterol: 55

Did you make this recipe?

Share a photo and tag us — we can't wait to see what you've made!

Leave a Comment

Recipe rating 5 Stars 4 Stars 3 Stars 2 Stars 1 Star