Cheesy Scalloped Potatoes

4 russet potatoes, (peeled and sliced into ¼-inch slices (about 2 pounds))

1 yellow onion, (sliced into rings)

3 tablespoons unsalted butter

3 tablespoons all-purpose flour

½ teaspoon kosher salt

2 cups whole milk, (room temperature)

1 ½ cups mild cheddar cheese, (shredded)

Salt and pepper to taste

Preheat oven to 400°F. Lightly spray an 8x8-inch casserole dish with nonstick cooking spray.
Arrange the potatoes and onions in the prepared baking dish, staggering potato and then onion.
In a medium-size saucepan, melt butter over medium heat. Mix in the flour and salt, and stir constantly with a whisk for one minute. Stir in milk. Cook until mixture has thickened.
Stir in cheese all at once, and continue stirring until melted and smooth, about 30-60 seconds.
Pour the cheese sauce over the potatoes, and cover the dish with aluminum foil.
Bake for 85-90 minutes, or until the potatoes are tender.
For a crisp topping, change the oven setting to broil after the potatoes are baked. Broil until golden brown.
Season with salt and pepper to taste and serve.

Course🍚Side Dish

Diets🥕Vegetarian...

Category🥘Casserole

Cuisine🇺🇸American

Occasions🍲Comfort Food📆Everyday🎉Holiday

Season🔁Year-round

DifficultyMedium ⏰ 1h