Brown ground beef in large frying pan. Drain well & mix beef with minced onion, salt. Italian seasoning, pepper, cheese & tomato sauce. Place mixture in large greased baking dish or pan.
3 Wash zucchini & trim ends; slice & cook in hot oil until soft. Put on top of beef-cheese mixture & sprinkle with mozzarella cheese.
4 Bake in 350 oven for 30 minutes.
5 Serves 6-8.