Name: Creamy au Gratin Potatoes
Prep time: 30 min
Cook time: 30 min
Yield: 4
Ingredients: Russet potatoes, thinly sliced - 4 medium; Onion, sliced into rings - 1 medium; Salt and ground black pepper to taste - 1 medium; Butter - 3 tablespoons; All-purpose flour - 3 tablespoons; Salt - ½ teaspoon; Milk - 2 cups; Shredded Cheddar cheese - 1 ½ cups

Ingredients for - Creamy au Gratin Potatoes

1. Russet potatoes, thinly sliced 4 medium

2. Onion, sliced into rings 1 medium

3. Salt and ground black pepper to taste 1 medium

4. Butter 3 tablespoons

5. All-purpose flour 3 tablespoons

6. Salt ½ teaspoon

7. Milk 2 cups

8. Shredded Cheddar cheese 1 ½ cups

How to cook deliciously - Creamy au Gratin Potatoes

1 . Stage

Preheat the oven to 400 degrees F (200 degrees C). Butter a 1-quart casserole dish.

2 . Stage

Layer 1/2 of the potatoes in the bottom of the prepared casserole dish; season with salt and pepper. Layer onion slices over top, then top with with remaining potatoes. Season again with salt and pepper.

3 . Stage

Melt butter in a medium saucepan over medium heat. Gradually whisk in flour and salt and cook, whisking constantly until raw flour flavor has cooked off, about 1 minute. Gradually add milk, about 1/4 cup at a time, whisking well after each addition to incorporate; the gradual addition and whisking of milk will help avoid lumps in your sauce.

4 . Stage

Cook, whisking constantly, until the mixture has thickened, 3 to 5 minutes. Stir in cheese all at once; continue stirring until melted, 30 to 60 seconds. Pour cheese sauce over the potatoes, and cover the dish with aluminum foil.

5 . Stage

Bake in the preheated oven until potatoes are tender and sauce is bubbly, about 1 1/2 hours. Dotdash Meredith Food Studios