Ham and Gruyère Potato Gratin
Ingredients 2 1/2 cups 1% low-fat milk 2 tablespoons all-purpose flour 3/4 teaspoon salt 1/2 teaspoon black pepper 2 teaspoons butter 1/2 cup finely chopped onion 1 cup (4 ounces) shredded Gruyère cheese, divided 2 pounds Yukon Gold potatoes, cut into 1/8-inch-thick slices (about 6 1/2 cups) Cooking spray 4 ounces less-sodium reduced-fat ham, chopped Preparation Preheat oven to 350°. Combine first 4 ingredients, stirring with a whisk; set aside. Heat butter in a medium saucepan over medium heat. Add onion; cook 3 minutes or until tender, stirring frequently. Stir in milk mixture; bring to a boil. Cook for 2 minutes, stirring constantly. Remove from heat; add 1/2 cup cheese, stirring until smooth. Arrange half of potatoes in an 11 x 7-inch baking dish coated with cooking spray. Pour half of sauce over potatoes; top evenly with ham. Top with remaining potatoes and remaining sauce; sprinkle evenly with r...