Ham & Potato Casserole

Pre-heat oven to 350 degrees

1 chopped onion
1/4 cup butter
1/4 cup flour
1 tsp. salt
1/2 tsp. dry mustard
dash of pepper
2 cups shredded cheddar cheese
6 cups cooked, cubed potatoes
1 1/2 cups of milk
2 cups of cooked cubed ham

Sautee onion and butter until tender; add flour and seasonings until thick. Gradually add milk, stirring constantly until thick and bubbly. Add 1 1/2 cups of cheese stirring until cheese melts. Add potatoes and ham and cook on low heat for about ten minutes. Spoon mixture into a shallow casserole dish. Bake uncovered at 350 degrees for 25 minutes. Sprinkle with remaining cheese and bake for 5 minutes longer. Enjoy!