Instructions

  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.