Ingredients
Scale
- 4 russet potatoes
- 1 yellow onion
- 3 tablespoons unsalted butter
- 3 tablespoons all-purpose flour
- ½ teaspoon kosher salt
- 2 cups whole milk
- 1 ½ cups mild cheddar cheese
- Salt and pepper to taste
Instructions
- Preheat your oven to 400°F and lightly spray an 8×8-inch casserole dish with nonstick cooking spray.
- Layer sliced potatoes and onion rings in the prepared baking dish.
- In a medium saucepan over medium heat, melt butter, then whisk in flour and salt for one minute.
- Gradually add room temperature milk while stirring until thickened.
- Stir in cheese until melted and smooth.
- Pour cheese sauce over the potato and onion layers, cover with foil, and bake for 85-90 minutes until tender.
- For a crispy top, broil for a few minutes until golden brown.
- Season with salt and pepper before serving warm.
- Prep Time: 20 minutes
- Cook Time: 90 minutes
- Category: Side Dish
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 cup (approximately 240g)
- Calories: 320
- Sugar: 4g
- Sodium: 450mg
- Fat: 16g
- Saturated Fat: 9g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 38g
- Fiber: 3g
- Protein: 9g
- Cholesterol: 45mg