Butternut Squash And Bacon Quiche Recipe

Name: Butternut Squash And Bacon Quiche Recipe
Ingredients: 3 cups all-purpose flour; 1 teaspoon salt; 12 tablespoons cold unsalted butter, cut into 1-inch chunks; ¾ cup cold water; 2 tablespoons olive oil; 3 cups diced and peeled butternut squash; 1 + 1 teaspoons salt, divided; 1 + 1 teaspoons black pepper, divided; ½ pound bacon, diced; 6 eggs; 2 cups heavy whipping cream; 1 cup milk; ¼ + ¼ cup grated Parmesan cheese, divided; ¼ + ¼ cup shredded Gruyère cheese, divided; ¼ + ¼ cup shredded Fontina cheese, divided; 10 sprigs fresh sage; 1 small yellow onion, sliced into rounds