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Cheesy Scalloped Potatoes That Are Pure Comfort Food Bliss

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These rich and creamy Cheesy Scalloped Potatoes are a perfect side dish, with tender layers of potato and onion smothered in a cheesy, buttery sauce. Baked to perfection with a golden crispy top, this dish is a comfort food classic that will leave everyone asking for seconds.

Ingredients

Scale
  • 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

Instructions

  1. Preheat oven to 400°F (200°C). Lightly spray an 8×8-inch casserole dish with nonstick cooking spray.
  2. Arrange the sliced potatoes and onions in the prepared baking dish, alternating and staggering the layers.
  3. In a medium saucepan, melt the butter over medium heat. Add the flour and salt, stirring constantly with a whisk for about 1 minute. Slowly stir in the milk and cook, stirring occasionally, until the mixture thickens.
  4. Stir in the shredded cheddar cheese and continue to stir until the cheese melts and the sauce is smooth, about 30–60 seconds.
  5. Pour the cheese sauce evenly over the potatoes and onions, ensuring they are well coated. Cover the dish with aluminum foil.
  6. Bake for 85–90 minutes, or until the potatoes are tender.
  7. For a golden, crispy top, switch the oven setting to broil and broil for 2–3 minutes, or until lightly browned.
  8. Season with additional salt and pepper to taste and serve hot.

Notes

  • Make-Ahead Tip: Assemble the dish ahead of time and refrigerate. Bring to room temperature before baking.
  • Cheese Variations: Try adding Gruyère, Monterey Jack, or a sharp white cheddar for extra flavor.
  • Serving Suggestion: Pairs beautifully with roast chicken, meatloaf, or holiday ham.

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