Ham And Gruyere Potato Gratin - cooking recipe

Ingredients

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

Preparation

Preheat oven to 350 degrees.
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 3/4 cup cheese, stirring until smooth.
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.
Cover with foil coated with cooking spray.
Bake a 350 degrees for 40 minutes.
Uncover and bake an additional 45 minutes until potatoes are tender and the cheese is golden group.
Remove from oven; let stand 5 minutes before serving.