Potato And Parmesan Gratin

Total Time: 2 hrs 30 mins Preparation Time: 30 mins Cook Time: 2 hrs

Ingredients

• Servings: 8
• 4 lbs medium boiling potatoes
• 1 1/2 teaspoons fine sea salt
• 1 cup heavy cream
• 1 cup whole milk
• 3 tablespoons unsalted butter, softened
• 7 ounces finely grated parmigiano-reggiano cheese

Recipe

• 1 put oven rack in middle position and preheat oven to 350°f.
• 2 peel potatoes and cut into 1/8-inch-thick slices with a knife or an adjustable-blade slicer, spreading slices out on a large kitchen towel. sprinkle with sea salt (1 1/2 teaspoons).
• 3 stir together cream and milk.
• 4 dot bottom of a 3-quart shallow baking dish (13 by 9 inches) with half of butter and pour in 1/3 cup cream mixture. without rinsing or drying potatoes, divide into 5 piles. layer potatoes in baking dish, 1 pile per layer, spreading 1/3 cup cream mixture and one fourth of cheese between layers. drizzle remaining cream mixture over potatoes and dot with remaining butter.
• 5 bake, uncovered, until potatoes are very tender and top is browned, about 2 hours. let stand at room temperature 10 minutes before serving.