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A close-up of a serving of Cheesy Scalloped Potatoes, showing layers of tender potatoes smothered in creamy sauce and topped with browned cheese.

Cheesy Scalloped Potatoes

These Cheesy Scalloped Potatoes feature layers of thinly sliced potatoes and onions covered in a rich, smooth cheese sauce. This recipe results in a tender, cheesy baked casserole.
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Prep Time 15 minutes
Cook Time 1 hour 30 minutes
Total Time 1 hour 45 minutes
Servings: 8 people
Course: Side Dish
Cuisine: American
Calories: 346
Ingredients Equipment Method Nutrition Notes

Ingredients
  

Potatoes and Onions
  • 4 russet potatoes peeled and sliced into ¼-inch slices (about 2 pounds)
  • 1 yellow onion sliced into rings
Cheese Sauce
  • 3 tablespoons unsalted butter
  • 3 tablespoons all-purpose flour
  • 1/2 teaspoon kosher salt
  • 2 cups whole milk room temperature
  • 1.5 cups mild cheddar cheese shredded
  • to taste salt and pepper

Equipment

  • Medium saucepan
  • Mandoline (optional)
  • 2-Quart baking dish

Method
 

  1. Preheat oven to 400°F. Lightly spray an 8×8-inch casserole dish with nonstick cooking spray.
  2. Arrange the potatoes and onions in the prepared baking dish, staggering potato and then onion.
  3. 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.
  4. Cook until the mixture has thickened.
  5. Stir in cheese all at once, and continue stirring until melted and smooth, about 30-60 seconds.
  6. Pour the cheese sauce over the potatoes, and cover the dish with aluminum foil.
  7. Bake for 85-90 minutes, or until the potatoes are tender.
  8. For a crisp topping, change the oven setting to broil after the potatoes are baked. Broil until golden brown.
  9. Season with salt and pepper to taste and serve.

Nutrition

Calories: 346kcal

Notes

If you want a less intense cheese flavor, reduce the amount of cheddar cheese used.

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