Place potatoes in two greased 13 x 9 x 2-inch pans.
Cut ham in serving pieces, bury in potatoes.
Combine soup, milk, onion, green pepper, and seasonings; pour over potatoes.
Dot casserole with butter.
Bake at 350° 1 hour.
Then cover pans with foil and bake 1 1/2 hours longer, or till done.
Sprinkle with parsley.