3 cups sliced potatoes
1/2 cup thinly sliced onion
1 can cream of celery soup
2/3 can of milk (use empty soup can)
1 tsp. salt
1/4 tsp. pepper
2 cups diced ham (or leave out salt & use a can of Spam)
grated cheddar cheese

Place potatoes, onions and ham in baking dish. Mix soup, milk, salt and pepper. Pour over potato mixture.

Bake at 375°F for 1 hour, covered. Remove from oven and sprinkle with cheese and bake 15 minutes longer, uncovered.

Variation: For plain scalloped potatoes, leave out ham and add extra potatoes.