MASHED-POTATO GRATIN

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Mashed-Potato Gratin image

Baking mashed potatoes with creamy cheese sauce creates a side dish no one can refuse. Afterall, potato gratins are a favorite for a reason.

Provided by Martha Stewart

Categories     Food & Cooking     Main Dish Recipes     Casserole Recipes

Time 1h

Number Of Ingredients 6

3 tablespoons butter, plus more for baking dish
3 pounds russet potatoes, peeled and chopped
Coarse salt
3 large egg yolks
1 1/4 cups milk
1 1/2 cups coarsely grated Gruyere, Jarlsberg, or other Swiss cheese (6 ounces)

Steps:

  • Preheat oven to 400 degrees. Butter a shallow, 1 1/2-quart baking dish. In a large pot, cover potatoes with water by 1 inch; add 1 tablespoon salt. Bring to a boil; reduce heat. Simmer until easily pierced with a paring knife, about 20 minutes. Drain. Wipe pan; return potatoes.
  • Add butter; mash with a potato masher until creamy. Cool slightly. Fold in egg yolks, milk, 1 1/4 cups cheese, and 2 teaspoons salt. Spread in prepared dish.
  • Top with remaining cheese. Bake until golden brown in spots, rotating dish halfway through, about 30 minutes.

Nutrition Facts : Calories 305 g, Fat 15 g, Fiber 2 g, Protein 12 g

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