Cook one chicken in water until tender. Save 2 soup cans of broth.

Diced chicken
1 can cream of mushroom soup
1 diced onion
1/2 lb. diced Velveeta cheese
2 cans broth
1 (6 or 7 oz.) pkg. shell macaroni (don't cook - add hard)
A little chopped green pepper

Mix, let stand overnight. Bake at 325 degrees for 1 1/2 hours.