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Turnip, Apple, and Cheddar Gratin

Yield 8 servings

Ingredients

  • 1 large onion, cut into 1/4-inch slices
  • 2 tablespoons olive oil
  • 1 1/2 teaspoons butter
  • 1 pound turnips, peeled and cut into 1/8-inch slices, divided
  • 1/2 pound baking potatoes, peeled and cut into 1/8-inch slices, divided
  • 1/2 pound Granny Smith apples, peeled and cut into 1/8-inch slices, divided
  • 1 tablespoon chopped fresh rosemary
  • 1 tablespoon chopped fresh thyme
  • 3/4 teaspoon fine-grained sea salt
  • 3/4 teaspoon freshly ground black pepper
  • 1 1/4 cups (5 ounces) grated extra-sharp Cheddar cheese
  • Garnish: sliced green onion

How to Make It

  1. Sauté onion in olive oil in a large skillet over medium-high heat 5 minutes. Cover, reduce heat to medium, and cook 15 to 20 more minutes or until onion is tender, stirring often. Uncover and cook, stirring constantly, 5 to 10 minutes or until browned. Remove from heat.

  2. Grease 10-inch cast-iron skillet with butter. Layer half of turnip, potato, and apple slices in skillet; sprinkle with half the onion, rosemary, thyme, sea salt, pepper, and cheese. Repeat procedure.

  3. Bake, uncovered, 40 minutes or until tender. Let stand 15 minutes. Garnish, if desired.