Ham And Gruyere Potato Gratin

• 2 1/2 cups milk (low fat recommended)
• 2 tablespoons all-purpose flour
• 3/4 teaspoon salt
• 1/2 teaspoon black pepper
• 2 teaspoons butter
• 1/2 cup finely chopped onion
• 1 1/4 cups shredded gruyere cheese, divided
• 2 lbs yukon gold potatoes, cut into 1/8 inch thick slices
• cooking spray
• 4 ounces ham, chopped

1. Preheat oven to 350 degrees.
2. Combine first 4 ingredients, stirring with a whisk, set aside.
3. 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 3/4 cup cheese, stirring until smooth.
4. Arrange half of potatoes in a 11 x 7 inch baking dish coasted with cooking spray.Pour 1/2 of sauce over potaotes; top evenly with ham. Top with remaining potatoes and remaining sauce; sprinkle evenly with remaining 1/2 cup cheese.
5. Cover with foil coated with cooking spray.
6. Bake a 350 degrees for 40 minutes.
7. Uncover and bake an additional 45 minutes until potatoes are tender and the cheese is golden group.
8. Remove from oven; let stand 5 minutes before serving.

milk, flour, salt, black pepper, butter, onion, gruyere cheese, gold potatoes, cooking spray, ham

Taken from www.food.com/recipe/ham-and-gruyere-potato-gratin-236994 (may not work)