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Italian Potato Gratin

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Potato Type: Russet
Cuisine: AmericanItalian
Prep Method: Baked


Side Dish

Prep Time

15 Mins

Cook Time

105 Mins


Serves 1 pan


  • 5 Tablespoons unsalted butter
  • 1 medium onion, finely chopped
  • ¼ cup all-purpose flour
  • ½ teaspoon coarse salt
  • 1 teaspoon Italian Seasoning
  • ½ teaspoon black pepper
  • 4 cups whole milk
  • 8.8 oz. mozzarella cheese + 1 cup, shredded
  • 5 cups thinly sliced peeled potatoes (about 6 medium russet potatoes)


  1. Preheat oven to 350F.
  2. Grease a 9 inch deep baking dish and set aside.
  3. In a medium saucepan, melt butter over medium heat, add onion and cook until softened, about 6 minutes.
  4. Add flour, salt, pepper and Italian seasoning and cook, stirring frequently, until mixture is pale golden for about 5 minutes.
  5. Whisking constantly, pour in 2 cups of milk, cook for a few minutes and add the remaining 2 cups of milk, whisk until smooth. Cook mixture stirring constantly until it starts to boil.
  6. Reduce heat to low and simmer gently, stirring occasionally, until the sauce thickens and is very creamy, about 8 – 10 minutes. Taste and adjust for salt and pepper.
  7. Remove from heat and stir in 8.8 ounces of cheese until melted.
  8. Mix the potatoes with the béchamel sauce and transfer the mixture to the baking dish, top with the remaining 1 cup of mozzarella cheese and transfer the dish into the oven.
  9. Bake for 1 hour or 1 hour and 10 minutes until the potatoes are tender.
  10. Serve and enjoy!

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1 Review

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Beth Duran

Super delicious! I recommend adding a few cloves of minced garlic to the pan when sautéing the onion, use 1/2 the...Read Full Review


Beth Duran

Super delicious! I recommend adding a few cloves of minced garlic to the pan when sautéing the onion, use 1/2 the amount of Italian seasoning that the recipe calls for, and a dash of cayenne.

Recipe By: Katalina Kastravet

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