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Crispy Parmesan and Gruyere Potato Gratin

A decadent, cheesy delight with layers of tender potatoes topped with gooey Gruyere and Parmesan cheese, crowned with a crispy, golden crust.
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Prep Time 20 minutes
Cook Time 1 hour 10 minutes
Total Time 1 hour 30 minutes
Servings: 6 servings
Course: Side Dish
Cuisine: American, French
Calories: 350
Ingredients Method Notes

Ingredients
  

Main Ingredients
  • 2 pounds potatoes (Yukon Gold or Russet) Peel and thinly slice.
  • 1 cup heavy cream
  • 1.5 cups Gruyere cheese, shredded
  • 0.5 cup Parmesan cheese, grated
  • 2 cloves garlic, minced
  • Salt and pepper, to taste
  • 2 tablespoons fresh thyme (or 1 tablespoon dried thyme)
  • Butter for greasing the dish

Method
 

Preparation
  1. Preheat your oven to 375°F (190°C).
  2. Peel and thinly slice your potatoes, aiming for about 1/8-inch thick slices.
  3. In a bowl, combine the heavy cream, minced garlic, thyme, salt, and pepper. Stir well.
  4. Grease a baking dish with butter.
  5. Layer half of your potato slices in the dish, slightly overlapping them.
  6. Drizzle half of your creamy mixture over the potatoes, then sprinkle half of both the Gruyere and Parmesan cheese.
  7. Repeat the layering process with the remaining potatoes, cream mixture, and finishing with a layer of cheese.
Baking
  1. Cover the dish with foil and bake for about 45 minutes.
  2. Remove the foil and let it bake for another 20-25 minutes until golden and bubbling.
  3. Let your gratin rest for about 10 minutes before slicing.

Notes

Feel free to add a layer of cooked bacon or sautéed mushrooms for extra flavor. You can prep the potatoes and sauce ahead of time, then assemble and bake when ready.