Potato-Mushroom Gratin

Potato-Mushroom Gratin
Potato-Mushroom Gratin
Luscious and satisfying—a little goes a long way. Make the gratin up to one day ahead. Before serving, cut it into pieces and rewarm in the oven.
  • Preparing Time: -
  • Total Time: -
  • Served Person: Makes 10 servings
Mushroom Potato Side Bake Christmas Thanksgiving Vegetarian Dinner Casserole/Gratin Parmesan Fall Family Reunion Christmas Eve Potluck Bon Appétit Sugar Conscious Pescatarian Wheat/Gluten-Free Peanut Free Tree Nut Free Soy Free No Sugar Added Kosher
  • 2 tablespoons chopped fresh thyme
  • 5 tablespoons olive oil, divided
  • 6 garlic cloves, thinly sliced
  • Carbohydrate 23 g(8%)
  • Cholesterol 47 mg(16%)
  • Fat 20 g(31%)
  • Fiber 3 g(12%)
  • Protein 7 g(14%)
  • Saturated Fat 9 g(46%)
  • Sodium 137 mg(6%)
  • Calories 295

Preparation Preheat oven to 375°F. Brush 13x9x2-inch glass or oval ceramic baking dish with 2 tablespoons oil. Arrange 1/3 of potatoes, slightly overlapping, in dish. Sprinkle with 1/2 teaspoon coarse salt and 1/4 teaspoon pepper. Pour 1/3 cup cream over; sprinkle with 1/4 cup cheese. Repeat layering 1/3 of potatoes, 1/2 teaspoon salt, 1/4 teaspoon pepper, 1/3 cup cream, and 1/4 cup cheese 2 more times. Bake uncovered until potatoes are tender, adding cream by tablespoonfuls if dry, about 45 minutes. Remove from oven; maintain oven temperature. Sprinkle thyme and garlic slices over gratin. Toss mushrooms in medium bowl with 3 tablespoons oil; sprinkle with coarse salt and pepper. Arrange mushroom slices atop gratin around edge of dish. Drizzle with 1/4 cup cream; sprinkle with 1/4 cup cheese. Continue to bake uncovered until mushrooms are tender and potato edges are golden brown, about 20 minutes longer. DO AHEAD: Can be made 1 day ahead. Cool 1 hour in dish; cover and chill. Before serving, cut gratin into 10 pieces. Transfer to rimmed baking sheet. Cover with foil and rewarm in 350°F oven, 10 to 15 minutes.

Preparation Preheat oven to 375°F. Brush 13x9x2-inch glass or oval ceramic baking dish with 2 tablespoons oil. Arrange 1/3 of potatoes, slightly overlapping, in dish. Sprinkle with 1/2 teaspoon coarse salt and 1/4 teaspoon pepper. Pour 1/3 cup cream over; sprinkle with 1/4 cup cheese. Repeat layering 1/3 of potatoes, 1/2 teaspoon salt, 1/4 teaspoon pepper, 1/3 cup cream, and 1/4 cup cheese 2 more times. Bake uncovered until potatoes are tender, adding cream by tablespoonfuls if dry, about 45 minutes. Remove from oven; maintain oven temperature. Sprinkle thyme and garlic slices over gratin. Toss mushrooms in medium bowl with 3 tablespoons oil; sprinkle with coarse salt and pepper. Arrange mushroom slices atop gratin around edge of dish. Drizzle with 1/4 cup cream; sprinkle with 1/4 cup cheese. Continue to bake uncovered until mushrooms are tender and potato edges are golden brown, about 20 minutes longer. DO AHEAD: Can be made 1 day ahead. Cool 1 hour in dish; cover and chill. Before serving, cut gratin into 10 pieces. Transfer to rimmed baking sheet. Cover with foil and rewarm in 350°F oven, 10 to 15 minutes.