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Potatoes au Gratin Recipe

4.6 from 95 reviews

Potatoes au Gratin is a classic French-inspired dish featuring thinly sliced potatoes baked in a creamy, buttery sauce until tender and topped with a golden, cheesy crust. This comforting recipe layers seasoned potatoes with a rich half-and-half or cream mixture, then bakes them to perfection with Parmesan or Gruyère cheese, resulting in a deliciously rich and savory side dish perfect for any occasion.

Ingredients

Scale

Potatoes

  • 3 to 4 pounds potatoes, peeled and cut into 1/4-inch slices
  • Kosher salt, to taste
  • Black pepper, to taste

Cream Sauce and Toppings

  • 2 tablespoons unsalted butter
  • 2 to 3 cups half-and-half or heavy cream
  • 1/4 cup grated Parmesan or Gruyère cheese
  • Pinch of nutmeg (optional)

Instructions

  1. Preheat and layer potatoes: Heat your oven to 400 degrees Fahrenheit. In a 10- or 12-inch ovenproof skillet, layer the thinly sliced potatoes, seasoning each layer generously with kosher salt and black pepper to enhance the flavor.
  2. Add butter and cream: Dot the top layer of potatoes with 2 tablespoons of unsalted butter, then pour in the half-and-half or heavy cream until it reaches about three-quarters of the way up the potato layers.
  3. Simmer on stovetop: Place the skillet over medium-high heat and bring the cream to a boil. Once boiling, reduce the heat to low and simmer uncovered for 10 minutes, allowing the cream to reduce by about half and thicken slightly.
  4. Bake at high heat: Transfer the skillet directly to the oven and bake at 400 degrees for approximately 10 minutes until the top starts to turn golden brown, developing a beautiful crust.
  5. Bake at lower heat until tender: Lower the oven temperature to 300 degrees Fahrenheit, and continue baking for about 8 more minutes until the potatoes are fork tender and the top is nicely browned.
  6. Add cheese and finish baking: Sprinkle the grated Parmesan or Gruyère cheese evenly over the top. Return the skillet to the oven and bake for an additional 3 to 5 minutes until the cheese melts and forms a golden, bubbly crust.
  7. Optional seasoning and serve: If desired, sprinkle a pinch of nutmeg atop the finished dish for extra warmth in flavor. Serve hot and enjoy your creamy, cheesy potatoes au gratin.

Notes

  • Use Yukon Gold or Russet potatoes for the best texture and flavor.
  • Adjust the cream quantity to just barely cover the potatoes for optimal creaminess without excess liquid.
  • Gruyère cheese gives a nuttier flavor, while Parmesan offers sharper notes.
  • Nutmeg is optional but adds a nice subtle warmth and depth to the dish.
  • Ensure potatoes are sliced uniformly to cook evenly.
  • This dish can be prepared ahead of time and baked just before serving.

Keywords: Potatoes au Gratin, Creamy potatoes, Baked potato dish, French potato recipe, Comfort food, Side dish