Mashed Potato Gratin

Name: Mashed Potato Gratin
Ingredients: 1 g 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 or Jarlsberg (6 ounces)

1 ingredients

2 steps

Ingredients

1 g 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 or Jarlsberg (6 ounces)

Directions

1

Preheat oven to 400 degrees. Butter a shallow, 1 1/2-quart baking dish.
2

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.