Ham and Potatoes

3T butter
3T flour
1t salt
1c shredded cheddar cheese
2c milk
2 med. onion, chopped
6 med. potatoes, peeled and sliced
1 lb ham (diced- the kind you can buy to make omelets)
breadcrumbs

Note: Basically this is a good recipe for leftover ham; nice and hearty. We halved this recipe (and cooked in a smaller dish) and it made plenty for us. We also used sliced deli ham and it worked quite well. Also, the onion wasn't part of the original recipe, but we really like onion.

Boil potatoes until soft and set aside. Cook onions in microwave until soft (~2 min) and set aside. Melt butter and add flour, stir constantly to make a roux; let it bubble a min. or two while still stirring. Add milk and cook until the mixture thickens. Add cheese and ham, stir until cheese is melted. Stir in potatoes and onions and pour into a 9x13 baking dish. Sprinkle breadcrumbs on top and bake @ 375 for 20 min.