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Crispy Parmesan and Gruyère Potato Gratin

A delightful layered dish featuring tender potatoes in a creamy garlic-infused sauce, topped with a golden crust of cheese.
Prep Time30 minutes
Cook Time1 hour 15 minutes
Total Time1 hour 45 minutes
Course: Side Dish
Cuisine: French
Keyword: Cheesy Potatoes, comfort food, Potato Gratin, Savory Bake, Vegetarian Side Dish
Servings: 6 servings
Calories: 350kcal

Ingredients

For the gratin

  • 5 medium Yukon Gold or white potatoes, thinly sliced This forms the heart of the dish.
  • 1 1/2 cups heavy cream For that rich, creamy foundation.
  • 2 teaspoons kosher salt To enhance the overall flavors.
  • 3 cloves garlic, finely minced Adding a fragrant and savory depth.
  • 1 tablespoon butter For sautéing and adding richness.
  • 1 small shallot, finely diced Introducing a sweet, subtle onion flavor.
  • 1 cup grated Gruyère cheese For a creamy, nutty layer.
  • 1/2 cup finely grated Parmesan cheese Giving a sharp, salty kick to the topping.
  • 1 teaspoon fresh thyme leaves Adding a touch of earthy freshness.

Instructions

Preparation

  • Preheat your oven to 325°F (163°C).
  • In a small saucepan over low heat, combine the heavy cream, kosher salt, and minced garlic. Let it simmer gently for about 5 minutes.
  • Thinly slice the potatoes to about 1/8-inch thickness.
  • In a skillet, melt the butter over medium heat. Add the diced shallots and sauté for about 5 minutes until soft.

Layering and Baking

  • In a greased baking dish, arrange the potato slices over the caramelized shallots.
  • Pour the infused cream over the layered potatoes.
  • Cover with foil and bake for 1 hour and 15 minutes.
  • Remove the foil and sprinkle Gruyère and Parmesan cheese on top. Broil for about 5 minutes until bubbly and golden brown.
  • Let the gratin rest for a few minutes before serving.

Notes

Use a mandoline slicer for uniform potato slices. Experiment with herbs like rosemary or sage, or add breadcrumbs for extra crunch. Can substitute heavy cream with half-and-half for a lighter option.