four chicken breasts (brushed with mayonnaise and cut up however you like)
a family size can of cream of mushroom soup
a large box of frozen broccoli spears (fresh would be ok too)

Place all in a baking dish topped with shredded cheese and cornflakes. Bake it at 350 degrees for approx. 45 minutes or however long it takes for the chicken to be done. I think it might work to partially pre-cook the chicken too.