Ham and Potato Casserole

8-10 potatoes
2 cups ham
1 cube butter
1 large carton of sour cream
1 can cream of mushroom soup
1 1/2 cups grated cheese
1 bunch chopped green onions

Boil the potatoes, let them cool and cut into cubes. Cut ham into cubes. Melt together butter, sour cream, soup, onions, and cheese. When cheese is melted, fold in potatoes and ham. Bake at 350 degrees for 45-60 minutes.