Cut ham in serving or bite-size pieces.
Place half the potatoes in greased 2-quart casserole.
Cover with ham pieces.
Place remaining potatoes atop.
Combine soup, milk, onion, green pepper, and pepper; pour over potatoes.
Dot with butter.
Cover and bake in moderate oven (350°) 1 hour.
Remove cover; bake 45 minutes longer or till potatoes are done.
Trim with snipped parsley.