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Best Au Gratin Potatoes

Golden, bubbly layers of thinly sliced potatoes smothered in a rich, creamy cheese sauce. A guaranteed crowd-pleaser for any gathering.
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Prep Time 20 minutes
Cook Time 1 hour
Total Time 1 hour 20 minutes
Servings: 6 servings
Course: Side Dish
Cuisine: French
Calories: 320
Ingredients Equipment Method Notes

Ingredients
  

Main
  • 4 large russet potatoes peeled and thinly sliced
  • 2 cups heavy cream
  • 1 cup grated sharp cheddar cheese
  • 1 cup grated Gruyère cheese
  • 2 cloves garlic minced
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/4 teaspoon nutmeg
  • 1/2 cup grated Parmesan cheese for topping

Equipment

  • Large mixing bowl
  • Mandoline or sharp knife
  • 9x13 inch baking dish
  • Whisk
  • Measuring cups and spoons
  • Oven

Method
 

  1. Preheat your oven to 375°F (190°C).
  2. Grease a 9x13 inch baking dish with butter.
  3. Using a mandoline or sharp knife, slice the potatoes into thin rounds.
  4. In a large mixing bowl, whisk together the heavy cream, minced garlic, salt, pepper, and nutmeg.
  5. Place half of the sliced potatoes in the prepared baking dish. Pour half of the cream mixture over them, followed by half of the cheddar and Gruyère cheeses.
  6. Layer the remaining potatoes on top, then pour the rest of the cream mixture over. Finish with the remaining cheese.
  7. Cover the baking dish with aluminum foil and bake for 45 minutes.
  8. Remove the foil and sprinkle the Parmesan cheese on top. Broil for an additional 5-10 minutes, until golden and bubbly.

Notes

For extra flavor, add fresh herbs like thyme or rosemary between the layers.