Peel, slice crosswise and cook onions until almost tender in a small amount of water. Drain well. In a greased casserole, alternate layers of bread crumbs, onion, cream sauce, salt and M-K seasonings, starting with and ending with crumbs. Dot with butter or margarine and sprinkle with M-K Paprika. This may be topped with grated cheese. Bake at 350° for 30 minutes or until bubbly and lightly browned.