1 lb. hamburger, fried & drained
1 onion, diced
1 zucchini, sliced thinly
2 tomatoes, diced, fresh or canned

Mix this all together and put in a 9"x13" pan, slice Velveeta cheese and layer the whole casserole, then cover in bread crumbs on top of cheese. Bake at 350 degrees for 45 minutes.