Rustic Onion Tart with Apple and Gruyere Cheese | Recipe Cart | Recipe Cart

Ingredients

• 1 cup all-purpose flour
• ¼ teaspoon salt
• 6 tablespoons cold, unsalted butter, cut into small pieces
• 5 tablespoons ice cold water
• 3 tablespoons olive oil, divided
• 3 medium-size yellow onions (5 cups sliced)
• 2 medium size tart apples (1 pound), cored and sliced ⠛-inch thick, then halved
• 1 teaspoon sugar
• 1 ½ ounces Gruyere cheese, shredded
• 2 tablespoons fresh chives, minced
• 1 teaspoon fresh thyme
• salt and ground black pepper, to taste