Easy Cheesy Scalloped Potatoes (Au Gratin)

You know those side dishes that somehow make the whole meal feel special? That's exactly what happens when I bring cheesy scalloped potatoes to the dinner table.

Last Thanksgiving, I put these together while Bradley was supposed to be helping me peel potatoes (he lasted about three before his phone called his name), and John kept sneaking bites of the cheese I was grating. Amy declared them "the prettiest potatoes ever" when they came out of the oven all golden and bubbly.

Here's the thing about this recipe—it's basically the love child of classic scalloped potatoes and potatoes au gratin. We're talking thinly sliced potatoes swimming in a creamy, garlicky sauce, then smothered in sharp cheddar cheese. It's comfort food at its finest, and honestly? It makes me look like I spent way more time in the kitchen than I actually did.

What I really love is how this dish works for everything from Tuesday night dinner to Christmas dinner. Plus, if you're looking for more crowd-pleasing sides, my best mashed potatoes are another family favorite that pairs beautifully with just about any main course.

Jump to:

• Why You'll Love These Cheesy Scalloped Potatoes
• What Makes This Recipe Different From Regular Scalloped Potatoes
• Ingredients You'll Need For Cheesy Scalloped Potatoes
• How To Make The Best Scalloped Potatoes From Scratch
• Storage And Reheating Tips For Scalloped Potatoes
• Tips For Perfect Creamy Scalloped Potatoes Every Time
• Variations To Try With This Scalloped Potato Recipe
• Frequently Asked Questions About Cheesy Scalloped Potatoes
• Recipes You May Like
• Final Thoughts On This Homemade Scalloped Potatoes Recipe
• Easy Cheesy Scalloped Potatoes Au Gratin

Why You'll Love These Cheesy Scalloped Potatoes

Let me tell you why this recipe has earned a permanent spot in my rotation:

Simple ingredients you probably have. No fancy cheese or hard-to-find items. Just russet or Yukon gold potatoes, heavy cream, sharp cheddar, and basic seasonings.

Make-ahead friendly for busy days. You can assemble this completely the night before and just pop it in the oven when you're ready. This saved me during Bradley's last soccer tournament weekend.

Rich and creamy without being heavy. The flour in the sauce keeps everything silky and prevents that watery mess some scalloped potatoes turn into.

Feeds a crowd easily. This recipe serves eight people, but it doubles beautifully if you're hosting a bigger gathering.

Customizable cheese options. While I use sharp cheddar, you can swap in Gruyere, Swiss, or Monterey Jack depending on what your family likes.

Perfect for holidays or weeknights. Fancy enough for Thanksgiving, easy enough for a random Tuesday.

What Makes This Recipe Different From Regular Scalloped Potatoes

I get asked this all the time: what's the difference between scalloped potatoes and au gratin?

Honestly? They're so similar that the names get used interchangeably now. Traditional scalloped potatoes use a cream sauce, while au gratin specifically includes cheese. This recipe combines both approaches—we make a creamy garlic sauce AND add tons of cheese, which gives you the best of both worlds.

The key is building layers. You're not just dumping everything in a dish and hoping for the best. We create thin layers of potatoes with the sauce and cheese in between, which means every bite has that perfect creamy, cheesy goodness.

Ingredients You'll Need For Cheesy Scalloped Potatoes

Here's what you'll need to make these incredible scalloped potatoes with cheese:

For the potatoes:

• 2-½ pounds russet or Yukon gold potatoes, thinly sliced
• 3 tablespoons butter
• ½ onion, chopped
• 3 cloves garlic, minced

For the cream sauce:

• 2-½ cups heavy cream
• 3 tablespoons all-purpose flour
• Salt and pepper to taste
• 1 teaspoon fresh thyme
• ½ teaspoon cayenne pepper (optional, but I love the little kick)

For the cheese layers:

• 3 cups sharp cheddar cheese, freshly grated
• 1 tablespoon fresh chives, chopped (optional but pretty)

A quick note from my cooking school days: Always grate your own cheese from a block. Pre-shredded cheese has anti-caking agents that prevent it from melting as smoothly. Trust me on this one—it makes a difference.

How To Make The Best Scalloped Potatoes From Scratch

Let me walk you through this step by step. It's easier than you think.

Preparing The Potatoes

1. Slice the potatoes thinly and evenly. You want them between ⅛ and ¼ inch thick. I learned the hard way that uneven slices mean some pieces are mushy while others are still crunchy. A mandoline slicer is your best friend here, though a sharp knife works fine if you're careful.
2. Decide whether to peel. I usually leave the skins on Yukon golds because they're thin and tender. For russets, I peel them because the skins can be tougher.

Making The Creamy Garlic Sauce

3. Melt the butter in a saucepan over medium heat. Once it's melted and bubbling, you're ready for the next step.
4. Add the chopped onions and cook for about 3 minutes. You want them soft and translucent, not browned. This is where all that sweet onion flavor develops.
5. Stir in the minced garlic and fresh thyme for one minute. Any longer and the garlic gets bitter. Amy loves helping with this part because it makes the whole kitchen smell amazing.
6. Whisk in the flour and cook for another minute. This creates a roux that'll thicken your sauce. Don't skip this step or you'll end up with watery potatoes.
7. Pour in the heavy cream slowly while whisking. Keep stirring to prevent lumps from forming.
8. Add your seasonings—salt, pepper, thyme, and cayenne if using. Start with less salt than you think you need since the cheese adds saltiness too.
9. Stir in 2 cups of the shredded cheddar cheese. Keep stirring until it's completely melted and the sauce is smooth. Once it's done, take it off the heat.

Assembling Your Scalloped Potatoes

10. Butter your baking dish generously. I use a 9x13 inch dish, but a 2-quart casserole works too. The butter prevents sticking and adds flavor to those crispy edges.
11. Layer half the sliced potatoes on the bottom. Try to overlap them slightly in an even layer. This isn't the time for perfection—just get them relatively even.
12. Pour half the cheesy garlic cream sauce over the potatoes. Make sure it gets into all the gaps between potato slices.
13. Sprinkle with half of the remaining shredded cheese. This creates that delicious cheesy layer in the middle.
14. Repeat the layers with remaining potatoes, sauce, and cheese. This double-layer method means you get creamy, cheesy goodness in every serving.
15. Top with chopped chives or fresh herbs. This is optional, but it makes the dish look restaurant-quality.

Baking To Perfection

16. Cover the dish tightly with aluminum foil. This traps steam and helps the potatoes cook through without the top burning.
17. Bake at 375°F for 40 minutes. The potatoes should be getting tender but not quite done yet.
18. Remove the foil and add the remaining cheese. This final layer of cheese gets all golden and bubbly on top.
19. Bake uncovered for another 20 minutes. You want the cheese melted, the top golden brown, and the potatoes tender when you poke them with a fork.
20. Let it rest for 10 minutes before serving. I know it's tempting to dig right in, but this resting time lets the sauce thicken up. Otherwise, you'll have a soupy mess on your plate.

Storage And Reheating Tips For Scalloped Potatoes

Storing leftovers: Cover tightly with foil or transfer to an airtight container. These keep in the fridge for up to 4 days. John usually finishes them off before then, eating them straight from the fridge at midnight (yes, I've caught him).

Freezing: Honestly? I don't recommend freezing these. The cream sauce can separate and get grainy when thawed. If you must freeze them, use within a month and expect some texture changes.

Reheating: Cover with foil and reheat at 350°F for about 20 minutes, or until warmed through. You can also microwave individual portions for 2-3 minutes, though they won't be quite as good as oven-reheated.

Make-ahead tip: Assemble the entire dish up to 24 hours ahead, cover, and refrigerate. When you're ready to bake, add an extra 10-15 minutes to the covered baking time since you're starting with a cold dish.

Tips For Perfect Creamy Scalloped Potatoes Every Time

Want to know the secrets I've learned after making these dozens of times? Here you go.

Use a mandoline for even slices. Seriously, this tool changed my life. Even slices mean everything cooks at the same rate. No more crunchy potatoes mixed with mushy ones.

Don't skip the flour. It might seem like an extra step, but the flour thickens the cream and prevents that watery disaster. I learned this the hard way at my first Thanksgiving dinner when my sauce was basically soup.

Let the cheese come to room temperature. Cold cheese takes forever to melt. I pull mine out while I'm prepping everything else.

Layer thin, not thick. You want multiple thin layers, not two giant layers. More layers mean more cheesy goodness distributed throughout.

Use fresh thyme if possible. Dried works in a pinch, but fresh herbs make such a difference. Amy thinks the little leaves look like fairy food.

Adjust the garlic to your family's taste. We love garlic in our house, so sometimes I add an extra clove. Start with the recipe amount and adjust from there.

Variations To Try With This Scalloped Potato Recipe

Once you've mastered the basic recipe, here are some fun ways to switch things up:

Try different cheese combinations. Mix sharp cheddar with Gruyere for a more sophisticated flavor. Bradley actually noticed when I did this and asked what was different.

Add bacon for extra richness. Cook 6 strips of bacon until crispy, crumble, and layer between the potatoes. This makes it even more of a crowd-pleaser.

Use sweet potatoes instead. Replace half the regular potatoes with sweet potatoes for a fun color contrast and slightly sweet flavor.

Make it lighter with milk. Swap the heavy cream for whole milk and add an extra tablespoon of flour. It won't be quite as rich, but it's still delicious.

Add vegetables for nutrition. Thin sliced onions or leeks layered with the potatoes work beautifully. Amy's more likely to eat her veggies this way.

Spice it up with jalapeños. Add diced jalapeños to the sauce for a spicy kick. We did this once for a Super Bowl party and they disappeared in minutes.

Frequently Asked Questions About Cheesy Scalloped Potatoes

Can I make scalloped potatoes ahead of time?

Yes! Assemble the dish completely, cover tightly, and refrigerate up to 24 hours before baking. Add 10-15 minutes to the baking time if starting cold. This is my go-to strategy for Thanksgiving and Christmas dinner prep.

What's the difference between scalloped potatoes and au gratin?

They're very similar! Traditional scalloped potatoes use a cream sauce, while au gratin includes cheese. This recipe combines both for extra richness. Honestly, most people use the terms interchangeably now, and I don't blame them—they're both delicious.

Why are my scalloped potatoes watery?

Potatoes release moisture while cooking. Make sure your potatoes are sliced evenly, don't skip the flour (it thickens the sauce), and let the dish rest 10 minutes after baking to set. Also, covering with foil for the first part of baking prevents too much liquid from evaporating too quickly.

Can I use a different cheese besides cheddar?

Absolutely! Gruyere, Swiss, Monterey Jack, or a blend work beautifully. Choose good melting cheeses for the creamiest texture. I've used a combination of cheddar and Gruyere for fancier dinners, and nobody ever complains.

Recipes You May Like

If you loved these easy scalloped potatoes, you'll definitely want to try these other incredible side dishes:

• Christmas Sweet Potato Casserole - Another holiday favorite with a sweet, pecan-topped topping that my family requests year-round
• Best Mashed Potatoes - Creamy, buttery, and so simple to make perfectly every time
• Garlic Butter Melting Potatoes - These crispy-bottomed, tender potatoes are coated in garlic butter and they're absolutely addictive

Final Thoughts On This Homemade Scalloped Potatoes Recipe

These cheesy scalloped potatoes have become one of those recipes that my family requests for every special occasion. They're rich, creamy, and somehow manage to make everyone at the table happy—which, with a picky 8-year-old and a teenage boy, is no small feat.

What I love most is how forgiving this recipe is. Forgot to slice the potatoes super thin? It'll still work. Used Monterey Jack instead of cheddar? Still delicious. That's what makes this such a great recipe for both beginners and experienced cooks.

Give these a try for your next family dinner or holiday gathering. Save this recipe on Pinterest so you can find it again when Thanksgiving rolls around!

Happy cooking, and here's to many more delicious meals with your loved ones.

– Stephanie

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