Recipe

Cheesy Scalloped Potatoes

Tender potato layers baked in a garlicky cream sauce with melty cheddar and Gruyere, finished with bubbly, golden edges.

By Matt Campbell

•

4.8

A bubbling casserole dish of cheesy scalloped potatoes with a golden browned top resting on a light stone countertop with a serving spoon nearby

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Cheesy scalloped potatoes are one of those dishes that make people hover near the oven like it is a campfire. You get tender potato layers, a sauce that somehow tastes both rich and bright (thank you, garlic and a little Dijon), and those crisp, toasty edges that everyone quietly fights over.

This version keeps things accessible: no fancy ingredients required, no fussy techniques, and no weird “why is my sauce grainy?” surprises. It is just a calm, reliable path to a pan of cozy carbs that absolutely shows up for you.

Raw ingredients for scalloped potatoes including russet potatoes, cheddar, Gruyere, garlic, cream, milk, and butter arranged on a tidy kitchen counter

Why It Works

Silky, not soupy: A quick roux thickens the sauce so it hugs every potato slice instead of pooling at the bottom.
Cheese that melts smooth: We take the sauce off the heat before adding cheese, which helps prevent a grainy or broken sauce.
Evenly tender potatoes: Thin, consistent slices bake at the same pace so you do not get crunchy surprises in the center.
Golden top, creamy middle: Covered first for gentle cooking, then uncovered to brown and bubble like it means it.

Pairs Well With

Storage Tips

How to Store and Reheat

Refrigerate: Cool completely, then cover the baking dish or transfer to an airtight container. Refrigerate up to 4 days (many food-safety guidelines recommend 3 to 4 days for cooked leftovers).

Freeze: You can freeze scalloped potatoes, but the sauce can loosen slightly when thawed. For best results, cool completely, portion, wrap tightly, and freeze up to 2 months. Thaw overnight in the fridge.

Reheat: For the best texture, reheat in a 350°F oven, covered, until hot throughout. A medium portion often takes about 20 to 30 minutes, but go by doneness, not the clock. If you have an instant-read thermometer, aim for an internal temp of 165°F. Uncover for the last 5 to 10 minutes to help re-crisp the top. Microwave works for quick lunches, but the oven brings back that just-baked vibe.

A glass meal prep container filled with leftover cheesy scalloped potatoes sitting on a kitchen counter with the lid beside it

Common Questions

What is the difference between scalloped potatoes and au gratin?

Traditionally, scalloped potatoes are baked in a creamy sauce, while au gratin includes cheese (and sometimes breadcrumbs). Real life is messier and more delicious, so most of us call the cheesy version scalloped anyway. This recipe is proudly in the “cheesy and creamy” camp.

Why are my scalloped potatoes still hard in the middle?

The usual culprits are slices that are too thick, a dish that is too deep, or not enough bake time while covered. Aim for 1/8-inch slices, keep the layers fairly even, and make sure you bake covered long enough for the potatoes to steam and soften. When they are done, a knife should slide into the center with basically no resistance.

Can I make these ahead?

Yes. Assemble the dish, cover, and refrigerate up to 24 hours. Let it sit at room temp for 30 minutes before baking. You may need to add 10 to 15 minutes to the covered bake time since it is starting cold.

Do I have to peel the potatoes?

Nope. If you like a more classic, silky look, peel them. If you want less prep and a little more rustic vibe, scrub well and leave the skins on. Russets have thicker skins, so I usually peel those and leave Yukon Gold skins on.

Which potatoes are best?

Russets bake up fluffy and soak in sauce like it is their job (a little more classic “scalloped” texture). Yukon Golds hold their shape a bit more and taste naturally buttery. Both work, so choose your vibe.

What cheese works best?

I love sharp cheddar for flavor plus Gruyere for that smooth, nutty melt. If you need swaps: Monterey Jack, fontina, low-moisture mozzarella, or even a smoked cheddar all work. Avoid pre-shredded if you can since it does not melt as smoothly.

How do I keep the sauce from turning grainy?

Keep the sauce at a gentle simmer (not a boil) after adding the milk and cream, then take it off the heat before stirring in the cheese. High heat can cause dairy to split and cheese to seize, and we are not doing that today.

Matt Campbell

I have always had a huge passion for the culinary arts, people, working as a team, and so on. I wanted to pursue my love for cooking initially at Virginia Commonwealth University with a culinary arts degree; however, I instead decided to apply myself and acquire more practical skills. My end goal is to eventually open my own restaurant or similar establishment.

Kitchen Essentials

9x13-inch baking dish (or similar 3-quart casserole)
Mandoline or sharp chef’s knife
Medium saucepan
Whisk
Measuring cups and spoons
Cutting board
Foil

I started making scalloped potatoes when I was chasing that “restaurant side dish energy” at home, the kind where the sauce is actually seasoned and the top gets those browned, lacy bits. The first time I nailed it, I ate a test spoonful, then another, then “accidentally” kept tasting until I had basically served myself a pre-dinner snack. Now it is my go-to when I want to feed people something comforting without babysitting a million moving parts. Slice, sauce, layer, bake, and try not to “taste test” half the pan before it hits the table.

Cheesy Scalloped Potatoes

(4.8 Reviews)

Prep Time 20 minutes

Cook Time 1 hour 20 minutes

Total Time 1 hour 40 minutes

Servings 10

Ingredients

3 lb russet potatoes, peeled (or Yukon Gold), sliced 1/8-inch thick
4 tbsp unsalted butter
1 small yellow onion, finely chopped
3 garlic cloves, minced
1/4 cup all-purpose flour
2 cups whole milk
1 1/2 cups heavy cream
1 1/2 tsp kosher salt, plus more to taste
1/2 tsp black pepper
1/2 tsp smoked paprika (optional, but highly encouraged)
1 tsp Dijon mustard
2 cups shredded sharp cheddar cheese (about 8 oz)
1 cup shredded Gruyere cheese (about 4 oz)
2 tbsp chopped chives or parsley, for serving (optional)

Thinly sliced potatoes on a cutting board next to a mandoline slicer and a chef's knife on a bright kitchen counter

Instructions

Heat the oven: Preheat to 375°F. Butter a 9x13-inch baking dish.
Slice the potatoes: Slice potatoes to about 1/8-inch thick. Keep them as even as possible so they cook at the same pace.
Start the sauce: In a medium saucepan over medium heat, melt the butter. Add onion and cook until soft, about 5 minutes. Add garlic and cook 30 seconds, just until fragrant.
Make a roux: Sprinkle in the flour and whisk constantly for 1 minute. You want it smooth, fragrant, and pale golden (do not let it get dark).
Whisk in dairy: Slowly whisk in milk, then cream. Add salt, pepper, smoked paprika (if using), and Dijon. Bring to a gentle simmer (not a boil), whisking often, until it thickens enough to coat the back of a spoon, about 3 to 5 minutes.
Add the cheese (off heat): Turn off the heat. Stir in the cheddar and Gruyere until melted and smooth. Taste and adjust seasoning. This is your moment. If it tastes a little flat, add a pinch more salt.
Assemble: Layer half the potatoes in the baking dish, slightly overlapping. Pour on half the cheese sauce. Repeat with remaining potatoes and sauce. Gently press the top so the sauce settles into the layers.
Bake covered: Cover tightly with foil and bake for 50 minutes.
Bake uncovered to brown: Remove foil and bake 25 to 35 minutes more, until the top is golden and the potatoes are very tender when pierced with a knife. (A knife should slide into the center without a fight.)
Rest, then serve: Let rest 15 minutes before serving so the sauce thickens up. Finish with chives or parsley if you like.