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Scalloped Potatoes Gratin

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Scalloped Potatoes Gratin is a rich and comforting side dish made with thinly sliced potatoes layered in a creamy, cheesy sauce and baked to golden perfection.

Ingredients

Scale
  • 2 lbs Yukon Gold or Russet potatoes, peeled and thinly sliced
  • 2 tbsp unsalted butter
  • 2 cloves garlic, minced
  • 2 tbsp all-purpose flour
  • 2 cups whole milk
  • 1 cup heavy cream
  • 1 1/2 cups shredded Gruyère cheese
  • 1/2 cup grated Parmesan cheese
  • Salt and pepper to taste
  • 1/4 tsp ground nutmeg (optional)
  • Fresh thyme or parsley, for garnish (optional)

Instructions

  1. Preheat the oven to 375°F (190°C). Grease a 9×13-inch baking dish with butter or cooking spray.
  2. In a saucepan over medium heat, melt butter and sauté minced garlic until fragrant, about 1 minute.
  3. Stir in flour and cook for 1–2 minutes to form a roux.
  4. Gradually whisk in milk and cream, and cook until the sauce thickens, about 5–7 minutes.
  5. Stir in salt, pepper, and nutmeg (if using), then mix in 1 cup Gruyère and 1/4 cup Parmesan until melted and smooth.
  6. Layer half of the sliced potatoes in the prepared dish. Pour half the cheese sauce over the potatoes.
  7. Repeat with remaining potatoes and sauce, smoothing the top evenly.
  8. Sprinkle remaining 1/2 cup Gruyère and 1/4 cup Parmesan over the top.
  9. Cover with foil and bake for 40 minutes. Remove foil and bake an additional 20–25 minutes until golden and bubbly.
  10. Let rest 10 minutes before serving. Garnish with herbs if desired.

Notes

  • Use a mandoline for evenly thin potato slices.
  • Gruyère can be substituted with sharp cheddar or Swiss cheese.
  • Make ahead: assemble the dish and refrigerate up to 24 hours before baking.
  • Add caramelized onions or ham for a heartier version.

Nutrition

Find it online: https://tastyera.com/scalloped-potatoes-gratin/