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Cheesy Au Gratin Potatoes Recipe

This Cheesy Au Gratin Potatoes recipe features thinly sliced potatoes baked in a creamy, cheesy sauce until golden brown and bubbly. It’s the perfect comforting side dish for any occasion.

Ingredients

Scale
  • 2 pounds Yukon Gold potatoes, peeled and thinly sliced
  • 4 tablespoons unsalted butter
  • 1/4 cup all-purpose flour
  • 3 cups whole milk
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/4 teaspoon nutmeg
  • 2 cups shredded Gruyere cheese
  • 1 cup shredded sharp cheddar cheese
  • 1/4 cup grated Parmesan cheese

Instructions

  1. Preheat oven to 375°F (190°C). Grease a 9×13 inch baking dish.
  2. In a large saucepan, melt butter over medium heat. Whisk in flour and cook for 1 minute, stirring constantly.
  3. Gradually whisk in milk until smooth. Bring to a simmer, stirring constantly.
  4. Reduce heat and cook for 5 minutes, or until sauce has thickened slightly, stirring occasionally.
  5. Remove from heat and stir in salt, pepper, and nutmeg.
  6. Stir in 1 1/2 cups Gruyere cheese and 3/4 cup cheddar cheese until melted and smooth.
  7. Layer half of the potatoes in the prepared baking dish. Pour half of the cheese sauce over the potatoes.
  8. Repeat layers with remaining potatoes and cheese sauce.
  9. Top with remaining Gruyere and cheddar cheese, and sprinkle with Parmesan cheese.
  10. Bake for 45-55 minutes, or until potatoes are tender and the top is golden brown and bubbly.
  11. Let stand for 10 minutes before serving.

Notes

For a richer flavor, use heavy cream instead of milk. Garnish with fresh parsley before serving.