Easy Sheet Pan Scalloped Potatoes with Gruyere and Parmesan

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Sheet Pan Scalloped Potatoes make the perfect side dish for any occasion! This recipe brings a modern twist to the classic, with creamy layers of Yukon Gold potatoes, aromatic garlic, rich Gruyere, and Parmesan cheese. By baking them on a sheet pan, you get perfectly cooked, golden layers with a crisp top that’s perfect for sharing at gatherings. Here’s how to make this easy, flavorful dish that’s sure to impress.

Ingredients:

  • 4 garlic cloves, minced
  • 2 cups shredded Gruyere cheese
  • 1/2 cup grated Parmesan cheese
  • 2 cups heavy cream
  • 1 tsp fresh thyme leaves, finely chopped
  • Salt and pepper, to taste
  • 2 1/4 lbs medium Yukon Gold potatoes, scrubbed (about 8 potatoes)

Instructions:

  1. Prepare the Oven and Baking Sheet:
    • Preheat your oven to 400°F (200°C).
    • Lightly grease a large baking sheet with butter or non-stick spray to prevent sticking.
  2. Slice the Potatoes:
    • Using a mandoline or a sharp knife, thinly slice the potatoes to about 1/8-inch thickness.
    • Uniform slices help them cook evenly.
  3. Make the Creamy Sauce:
    • In a mixing bowl, combine the minced garlic, heavy cream, chopped thyme, salt, and pepper. Stir well.
  4. Layer the Potatoes:
    • Arrange the potato slices on the sheet pan in a single overlapping layer (like shingles).
    • Pour the cream mixture evenly over the potatoes, making sure all slices are coated.
  5. Add the Cheese:
    • Sprinkle the shredded Gruyere and grated Parmesan evenly over the top of the potatoes.
  6. Bake:
    • Place the sheet pan in the preheated oven and bake for 30–35 minutes, or until the potatoes are tender and the top is golden and bubbly.
  7. Serve:
    • Remove from the oven and let the potatoes cool slightly before serving.
    • Top with a sprinkle of fresh thyme leaves for an added burst of flavor, if desired.

Conclusion:

These Sheet Pan Scalloped Potatoes are a deliciously simple way to enjoy a classic dish with a gourmet twist. The combination of Gruyere and Parmesan melts into creamy, garlicky perfection, while the thin potato slices bake to a tender, golden finish. Ideal for family dinners, holiday meals, or potlucks, this recipe is both easy to make and impressive to serve. Enjoy this comforting side dish that’s sure to become a new favorite!