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Cheesy Scalloped Potatoes

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A warm and comforting dish of layered potatoes and sweet onions, covered in a rich, creamy cheese sauce.

Ingredients

Scale
  • 4 russet potatoes (peeled and sliced)
  • 1 yellow onion (sliced)
  • 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)

Instructions

  1. Preheat your oven to 400°F and lightly spray an 8×8-inch casserole dish with nonstick cooking spray.
  2. Layer the sliced potatoes and onion rings in the baking dish, creating tantalizing rows that promise deliciousness.
  3. Melt the butter in a medium saucepan over medium heat until it’s bubbling and fragrant.
  4. Whisk in the flour and salt, stirring for about one minute until the mixture is bubbling lightly, forming a roux.
  5. Gradually stir in the room temperature milk, whisking continuously until the sauce begins to thicken, creating a luscious base.
  6. Add the shredded cheese into the thickened sauce, mixing until it’s smooth and delightfully gooey.
  7. Pour the cheese sauce over the layered potatoes and onions, ensuring they are well-coated and ready for baking.
  8. Cover the dish with aluminum foil and bake for 85-90 minutes until the potatoes are fork-tender.
  9. Remove the foil and broil briefly to achieve a beautiful golden top, watching closely to avoid burning.
  10. Season with salt and pepper before serving, and prepare to enjoy every scrumptious bite!

Notes

Leftovers can be stored in an airtight container in the refrigerator for up to 4 days. To reheat, pop the dish back in the oven or microwave individual portions.

Nutrition

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