Cheesy Garlic Scalloped Potatoes Recipe

This Cheesy Garlic Scalloped Potatoes Recipe makes about 8 servings of tender russet or Yukon Gold potatoes layered with a creamy garlic sauce, sharp cheddar, and finely grated Parmesan. The potatoes bake covered for 40–45 minutes and uncovered for another 20–30 minutes at 375°F, then rest for 10–15 minutes so the sauce thickens beautifully.

Every forkful delivers soft, buttery potato slices, mellow roasted garlic flavor, fragrant thyme, and a deeply golden cheese topping. It is a comforting side dish for Sunday dinner, holiday gatherings, or any meal that deserves something warm and wonderfully creamy.

Why You’ll Love This Recipe

These cheesy garlic scalloped potatoes have everything a memorable comfort-food side should offer: a creamy center, crisp golden corners, and a savory cheese crust that makes everyone reach for seconds. The sauce is made from simple pantry and refrigerator staples, yet it tastes rich and carefully prepared.

Garlic is gently cooked in butter before flour, milk, and cream are added. This short cooking step softens the garlic’s sharpness while keeping its warm flavor present throughout the dish.

• Serves a crowd: One 9 x 13-inch baking dish makes about 8 servings.
• Reliable texture: Uniform slices cook at the same rate.
• Balanced flavor: Sharp cheddar brings tang, while Parmesan adds a salty, nutty finish.
• Make-ahead friendly: The casserole can rest while you finish the rest of dinner.

For a complete family-style menu, serve these potatoes beside our garlic butter chicken thighs. The creamy potatoes are especially good with tender chicken and savory mushrooms.

Ingredients You’ll Need

Choose 3 pounds of russet or Yukon Gold potatoes. Russets create a particularly fluffy, absorbent interior, while Yukon Gold potatoes have a naturally buttery flavor and hold their shape well.

The sauce combines 3 tablespoons of unsalted butter, 4 finely minced garlic cloves, 3 tablespoons of all-purpose flour, 2 cups of whole milk, and 1 cup of heavy cream. The flour gives the dairy mixture enough body to cling to every potato layer without becoming overly thick in the saucepan.

Season the sauce with 1 teaspoon kosher salt, 1/2 teaspoon black pepper, and either 1/2 teaspoon dried thyme or 1 teaspoon fresh thyme leaves. Finish the casserole with 1 1/2 cups shredded sharp cheddar and 1/2 cup finely grated Parmesan.

• Grease the baking dish with additional butter or cooking spray.
• Shred the cheddar before beginning so the layers can be assembled quickly.
• Use finely grated Parmesan so it melts into a cohesive, savory crust.

There is no need to add onion, rosemary, or parsley for a delicious result. Those ingredients can be used in variations, but this garlic-and-cheese version keeps the main flavors focused and satisfying.

How to Make It Step-by-Step

Step 1: Heat the oven to 375°F and grease a 9 x 13-inch baking dish with butter or cooking spray. Set the dish aside where it will be ready as soon as the sauce is prepared.

Step 2: Peel or scrub the potatoes, then slice them approximately 1/8 inch thick. A mandoline creates the most even slices, but a sharp chef’s knife works well when you move slowly and keep the thickness consistent.

Step 3: Do not soak or rinse the sliced potatoes. The starch on their surface is useful because it releases into the cream sauce as the casserole bakes and helps create a thicker finish.

Step 4: Melt the butter in a saucepan over medium heat, then add the finely minced garlic. Cook it for about 30–60 seconds, stirring constantly, until fragrant; do not let the garlic brown because browned garlic can taste bitter.

Step 5: Whisk the flour into the garlic butter and cook for about 1 minute. This brief step removes the raw flour taste and prepares the butter-flour mixture to thicken the dairy.

Step 6: Gradually whisk in the whole milk and heavy cream. Add the kosher salt, black pepper, and thyme, then simmer for 3–5 minutes while whisking frequently, until the sauce is slightly thickened.

Step 7: Arrange one-third of the potato slices in the greased dish. Try to overlap them slightly rather than leaving large gaps, which helps each serving hold together.

Step 8: Spoon some of the cream sauce over the first potato layer and sprinkle with part of the cheddar and Parmesan. Repeat the potatoes, sauce, and cheese for two more layers, finishing with the remaining cheese on top.

Step 9: Cover the dish tightly with foil and bake for 40–45 minutes. The covered baking period traps moisture and gives the potato layers time to soften without allowing the cheese to brown too early.

Step 10: Remove the foil and continue baking for 20–30 minutes. The casserole is ready when a fork slides easily through the center and the cheese topping is deeply golden with bubbling edges.

Step 11: Transfer the dish to a heat-safe surface and let it rest for 10–15 minutes. Cutting into it immediately can make the sauce appear loose, while resting gives the starches and cheese time to settle.

Chef’s Tips for Creamy, Golden Potatoes

The most important detail is slice thickness. Pieces that are much thicker than 1/8 inch may remain firm while thinner pieces become very soft, so take your time with this part of the preparation.

Keep the garlic pale as it cooks. Thirty to sixty seconds is enough to release its aroma into the butter without adding a burnt flavor to the sauce.

Whisk the milk and cream in gradually instead of pouring them in all at once. This helps the flour disperse smoothly and reduces the chance of lumps.

• For even layers: Arrange potato slices in slightly overlapping rows.
• For a golden top: Remove the foil only after the first 40–45 minutes of baking.
• For clean serving: Rest the casserole for the full 10–15 minutes.
• For a full dinner: Pair the potatoes with roasted meat, green beans, or a crisp salad.

If you are planning a garlic-forward meal, our honey garlic chicken breasts make a sweet-savory main course that contrasts nicely with the rich, cheesy potatoes.

Serving, Storage & Reheating

Serve the potatoes warm after their resting period. A broad spoon is ideal because it gathers the tender layers, creamy sauce, and browned cheese from the bottom and sides of the dish.

This casserole pairs beautifully with roast chicken, pork, steak, baked ham, or a simple green vegetable. For another excellent pairing, try it alongside our baked garlic pork tenderloin, whose lean, savory slices work well with the creamy side.

Refrigerate leftovers in a covered container once they have cooled. Reheat individual portions gently until hot, or warm a larger amount in a covered baking dish so the potatoes retain moisture; avoid overheating, which can cause the sauce to separate.

The potatoes are also excellent the next day, when the flavors have had additional time to mingle. Add a small splash of milk before reheating if the sauce seems especially firm after refrigeration.

Cheesy Garlic Scalloped Potatoes

Thinly sliced potatoes are layered with a creamy garlic béchamel, sharp cheddar, and Parmesan, then baked until fork-tender and golden. This rich, comforting side dish serves about 8 people.

Print Recipe Pin Recipe

Prep Time 20 minutes mins

Cook Time 1 hour hr

Total Time 1 minute min

Servings: 8 servings

Ingredients Method Notes

Ingredients

  

Potatoes and Sauce

• 3 pounds Russet or Yukon Gold potatoes, peeled or scrubbed and sliced about 1/8 inch thick
• 3 tablespoons Unsalted butter
• 4 cloves Garlic, finely minced
• 3 tablespoons All-purpose flour
• 2 cups Whole milk
• 1 cup Heavy cream

Seasonings

• 1 teaspoon Kosher salt
• 1/2 teaspoon Black pepper
• 1/2 or 1 teaspoon dried or teaspoon fresh Dried thyme or fresh thyme leaves

Cheese

• 1 1/2 cups Sharp cheddar cheese, shredded
• 1/2 cup Parmesan cheese, finely grated

For the Dish

• as needed Butter or cooking spray

Method

 

Step-by-Step

1. Heat the oven to 375°F and grease a 9 x 13-inch baking dish with additional butter or cooking spray.
2. Slice the peeled or scrubbed potatoes evenly, about 1/8 inch thick. Do not soak or rinse them after slicing because their surface starch helps thicken the sauce.
3. Melt the butter in a saucepan over medium heat. Add the minced garlic and cook for 30–60 seconds without letting it brown.
4. Whisk in the flour and cook for about 1 minute. Gradually whisk in the whole milk and heavy cream, then add the salt, pepper, and thyme.
5. Simmer the sauce for 3–5 minutes, whisking frequently, until it becomes slightly thickened.
6. Arrange one-third of the potatoes in the prepared dish. Spoon over some cream sauce and sprinkle with part of the cheddar and Parmesan, then repeat for two more layers, finishing with cheese.
7. Cover the baking dish tightly with foil and bake for 40–45 minutes. Remove the foil and bake for another 20–30 minutes, until the potatoes are fork-tender and the top is deeply golden.
8. Let the potatoes rest for 10–15 minutes before serving. This allows the sauce to set into a thicker, creamier consistency.

Notes

Use a mandoline carefully or a sharp knife to create uniformly thin slices. Do not rinse the sliced potatoes, cover the dish during the first part of baking, and allow the finished casserole to rest before serving.

Final Thoughts

This Cheesy Garlic Scalloped Potatoes Recipe is a dependable centerpiece for any comfort-food spread. Thin potato slices, a gently seasoned garlic cream sauce, sharp cheddar, and Parmesan come together in layers that are tender beneath and beautifully browned on top.

Remember the three keys to success: slice the potatoes evenly, keep them unrinsed, and give the finished casserole 10–15 minutes to rest. Once you bring the bubbling dish to the table, expect the golden edges and creamy center to disappear quickly.

Make it for a holiday meal, a Sunday roast, or an ordinary evening when dinner calls for something cozy and generous. This is the kind of side dish that turns simple ingredients into the most requested part of the meal.