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Au Gratin Potatoes Recipe

Au Gratin Potatoes Recipe

This au gratin potatoes recipe combines thinly sliced potatoes with a rich, creamy cheese sauce for a comforting and satisfying dish.
The layering technique ensures every bite is full of flavor, while the golden, bubbly top adds an irresistible finish.
It is simple enough for everyday cooking yet impressive enough for special occasions.
The balance of creamy texture and savory cheese makes it a dependable crowd-pleaser. With a few basic ingredients and proper technique, this dish delivers consistent and delicious results every time.
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Prep Time 10 minutes
Cook Time 1 hour 5 minutes
Total Time 1 hour 15 minutes
Servings: 10
Calories: 484
Ingredients Equipment Method Notes

Ingredients
  

  • 3 pounds russet potatoes thinly sliced
  • 4 tablespoon butter
  • 3 sprigs fresh thyme or ½ teaspoon dried thyme
  • 3 cloves garlic minced
  • ¼ cup all-purpose flour
  • 1½ cups cream or milk
  • 1 teaspoon kosher salt
  • ½ teaspoon black pepper
  • 2 cups shredded gruyere cheese
  • 2 cups shredded white cheddar cheese

Equipment

  • Mandoline slicer
  • Medium saucepan
  • Whisk
  • Baking dish
  • Aluminum foil
  • Knife and cutting board

Method
 

  1. Start by melting butter in a saucepan over medium-low heat, then add thyme and garlic and cook gently until fragrant.
  2. Sprinkle in the flour gradually while whisking continuously and cook briefly to remove the raw flour taste.
  3. Slowly pour in the cream while whisking, allowing the mixture to smooth out and thicken into a rich sauce.
  4. Let it simmer gently until it coats the back of a spoon, then remove from heat and stir in part of the cheeses until melted and smooth. Season with salt and pepper.
  5. Arrange a layer of thinly sliced potatoes in a baking dish, then spoon some of the cheese sauce over the top and sprinkle with a portion of the remaining cheese.
  6. Continue layering the potatoes, sauce, and cheese until the dish is filled, finishing with a generous layer of cheese on top.
  7. Cover the dish with foil and bake in a preheated oven at 350°F until the potatoes are tender.
  8. Remove the foil and continue baking until the top turns golden brown and bubbly.
  9. Allow the dish to rest briefly before serving so the sauce can settle and thicken.

Notes

This dish proves that simple ingredients can come together to create something deeply comforting and memorable.
With its creamy layers, rich cheese sauce, and perfectly baked texture, it stands out as a timeless favorite.
Whether served at a gathering or enjoyed as a cozy meal at home, it’s the kind of recipe that always leaves a lasting impression.