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–+ servings
Golden cheesy baked potato casserole topped with melted cheese and fresh herbs.

Potatoes au Gratin

Smiling woman with glasses and dark hair, professional portrait for Baked Bree website.Diane Goodman
5 from 1 vote
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Prep Time 20 minutes
Cook Time 1 hour 40 minutes
Total Time 2 hours
Course Side Dish
Cuisine French
Servings 8
Calories 434 kcal

Ingredients
  

  • 1 1/2 cups heavy cream
  • 2 garlic cloves minced
  • 2 tablespoons unsalted butter melted
  • 2 1/2 pounds Russet potatoes peeled
  • 1 teaspoon salt
  • 1/4 teaspoon black pepper
  • 2 1/2 cups Gruyère cheese freshly grated (substitute with cheddar if preferred)
  • 2 teaspoons fresh thyme leaves optional

Instructions
 

  • In a small bowl, whisk together the melted butter, heavy cream, and minced garlic until well combined.
    Whisking cream and butter mixture in glass bowl for baking recipes.
  • Set your oven to 350°F. While it's warming up, you have time to slice the potatoes and grate the cheese.
    Shredded cheese, a block of cheese, and a cheese grater on a beige plate for baked cheese dishes.
  • Cut the potatoes into thin slices, about 1/8 inch thick. A mandoline slicer is a handy tool for this, but a sharp knife will do just fine.
    Sliced potatoes on a wooden cutting board with a kitchen knife for homemade recipes.
  • In a greased 9x13 inch baking dish, arrange a third of the potato slices. Drizzle with a third of the creamy mixture, and season with a third of the salt, pepper, and thyme. Sprinkle with 3/4 cup of the grated cheese.
    Creamy cheesy mashed potatoes topped with shredded cheese on a white oval platter with fresh thyme sprigs.
  • Create two more layers following the same pattern as the first, but hold off on adding cheese to the top layer—we'll get to that later.
    Creamy cheese lasagna with ricotta and mozzarella on a white platter, garnished with fresh herbs.
  • Cover the dish with foil or a lid and bake for about 1 hour and 15 minutes. Check if the potatoes are tender by inserting a knife into the center. If they need more time, give them up to 15 additional minutes.
    Baked Bree, foil-wrapped dish on a white surface, garnished with fresh thyme sprigs.
  • Once the potatoes are tender, remove the cover and sprinkle the remaining cheese on top. Bake uncovered for another 10 to 15 minutes, or until the cheese is golden and bubbly.
    Creamy potato gratin with cheese in an oval baking dish, garnished with fresh thyme.
  • Let the dish stand for about 5 minutes before serving to set.
    Creamy potato gratin with melted cheese and fresh thyme on a white plate.

Nutrition

Calories: 434kcalCarbohydrates: 28gProtein: 13gFat: 31gSaturated Fat: 19gSodium: 614mgFiber: 2g
Keyword Easy Potatoes au Gratin
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