Cut cabbage in half, separate leaves and soak in cold water. Slice leaves into strips, removing hard center core. Place in boiling salted water; parboil for 5 minutes. Allow to stand in hot water for several minutes and drain.
Alternate layers of cabbage, soup, and cheese in greased 1 1/2 casserole dish. If desired, season with salt and pepper (there is salt in the condensed soup and cheese spread, so be careful (about adding more).
Sprinkle with breadcrumbs; dot with butter and bake at 350° F for 20 to 30 minutes.
Servings: 8