Creamy Cheesy Scalloped Potatoes

When the foil comes off, the potatoes are softening but the top is still pale, with creamy sauce tucked between the layers. That’s exactly where this casserole should be before the cheddar goes on. I make these creamy cheesy scalloped potatoes when I want a comforting side that feels special without needing a separate stovetop finish.

The sauce starts with butter and flour, then milk and cream go in gradually so it thickens evenly instead of turning lumpy. Sharp cheddar melts into the sauce after it comes off the heat, keeping the cheese smooth and rich. Once the potatoes are tender and the top is golden, the layers settle into a creamy, cheesy bake.

Why the Foil Comes Off Before the Potatoes Are Done

The covered part of the bake gives the potato layers time to soften in the moisture from the sauce. Keeping the dish tightly covered also protects the top from browning too soon, before the center is tender. At this point, a pale surface is expected; it isn’t a sign that anything has gone wrong.

Once the foil comes off, the remaining oven time does two jobs: it finishes cooking the potatoes and gives the cheddar on top a chance to turn golden. Don’t judge the center by the color of the top. The reliable cue is a knife sliding easily into the potatoes, including in the middle of the dish.

This two-part bake is useful because the potato layers and the cheese topping need different conditions. Covered, they soften without drying out; uncovered, the surface can brown. If the top looks ready but a knife still meets resistance in the center, cover the dish again and keep baking until the potatoes are tender.

How the Potatoes, Roux, and Cheddar Build the Creamy Layers

• Yukon Gold potatoes — Their creamy texture holds up well in layered bakes. Slice them evenly so they soften at the same pace. Russet potatoes work as a substitute, but their starchier texture makes the layers softer and less distinct.
• Butter and all-purpose flour — Together, they form the roux that thickens the milk and cream into a sauce that clings to the potatoes. For a gluten-free version, use a measure-for-measure gluten-free flour blend in place of the all-purpose flour; the sauce may have a slightly different texture.
• Whole milk and heavy cream — Whole milk gives the sauce its body, while heavy cream makes it richer. If you don’t have heavy cream, use the same amount of half-and-half for a lighter sauce. Keep the whole milk as written so the sauce has enough body.
• Sharp cheddar — Sharp cheddar brings a pronounced cheese flavor that stands up to the potatoes. A block you shred yourself melts especially smoothly, though pre-shredded cheddar is convenient and works here. Medium cheddar can replace sharp cheddar for a milder result.
• Garlic, kosher salt, and black pepper — The garlic gives the sauce savory depth, while the salt and pepper season both the creamy sauce and the potato layers. Mince the garlic finely so it disperses through the sauce instead of leaving larger pieces.

Build the Sauce First, Then Let the Oven Finish the Layers

Layer the Potatoes in the Buttered Dish

Heat the oven to 375°F and grease a 9×13-inch baking dish with the softened butter. Peel the Yukon Gold potatoes and slice them 1/8 inch thick; even slices help the layers cook at the same rate. Arrange half of the potatoes in overlapping layers across the dish. Keep the slices spread in a fairly even layer rather than piling them into one spot.

Cook the Roux Until It Smells Fragrant

Melt the butter in a medium saucepan over medium heat, then stir in the flour and minced garlic. Cook for 1 minute, stirring constantly, so the flour loses its raw taste without browning. If the mixture starts catching on the bottom, keep it moving and lower the heat slightly. The roux should look smooth and smell gently garlicky.

Whisk in the Dairy and Melt in the Cheddar

Gradually whisk in the milk and heavy cream, then add the kosher salt and black pepper. Bring the sauce to a gentle simmer and cook for 3 to 5 minutes, whisking, until it thickens enough to coat a spoon. A vigorous boil can make the sauce harder to control, so keep the heat at a gentle simmer. Take the pan off the heat before stirring in 1 1/2 cups of the cheddar, and stir until it melts into the sauce.

Cover to Soften, Then Uncover to Brown

Pour half of the cheese sauce over the first layer of potatoes, arrange the remaining potatoes on top, and pour the rest of the sauce over them. Cover the dish tightly with foil and bake for 50 minutes. Remove the foil, sprinkle the remaining 1/2 cup of cheddar over the top, and bake for 25 to 35 minutes, until a knife slides easily into the potatoes and the top is golden. Let the casserole rest for 15 minutes before serving.

Two Easy Ways to Adapt the Cheesy Potato Layers

Questions That Come Up While Making Scalloped Potatoes

Creamy Cheesy Scalloped Potatoes

Creamy cheesy scalloped potatoes are layered with a cheddar sauce and baked until the potatoes are knife-tender with a golden top. Let the casserole rest for 15 minutes so the sauce settles before serving.

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 1 hour hr 25 minutes mins

resting 15 minutes mins

Total Time 1 hour hr 55 minutes mins

Servings: 8 servings

Course: Side Dish

Cuisine: American

Calories: 600

Ingredients Equipment Method Notes

Ingredients

  

For the potatoes

• 1 tbsp unsalted butter softened
• 3 lb Yukon Gold potatoes peeled and sliced 1/8 inch thick

For the cheese sauce and topping

• 3 tbsp unsalted butter
• 3 tbsp all-purpose flour
• 2 cloves garlic minced
• 2 cup whole milk
• 1 cup heavy cream
• 1 tsp kosher salt
• 0.5 tsp black pepper
• 2 cup sharp cheddar cheese shredded, divided

Equipment

• 1 9x13-inch baking dish

Method

 

Prepare the dish

1. Heat the oven to 375°F and grease a 9x13-inch baking dish with the softened butter.
2. Arrange half of the potatoes in overlapping layers in the baking dish.

Make the cheese sauce

1. Melt the butter in a medium saucepan over medium heat, then stir in the flour and garlic and cook for 1 minute, stirring constantly.
2. Gradually whisk in the milk and cream, then add the salt and pepper; bring to a gentle simmer and cook for 3 to 5 minutes, whisking, until thick enough to coat a spoon.
3. Remove the saucepan from the heat and stir in 1 1/2 cups of the cheddar until melted.

Assemble and bake

1. Pour half of the cheese sauce over the potatoes, arrange the remaining potatoes on top, and pour the rest of the sauce over them.
2. Cover the dish tightly with foil and bake for 50 minutes, then remove the foil, sprinkle the remaining 1/2 cup cheddar over the top, and bake for 25 to 35 minutes, until the potatoes are knife-tender and the top is golden.
3. Let the potatoes rest for 15 minutes before serving.

Notes

For even cooking, slice the potatoes uniformly. Refrigerate leftovers for up to 4 days; freezing is possible, though the sauce may change texture. For a gluten-free version, replace the all-purpose flour with a 1:1 gluten-free flour blend.