Instructions

          1    onion, sliced

          2    pounds zucchini, sliced

          1    stick butter, divided

          2    cups shredded Mozzarella cheese

         ½    cup breadcrumbs

         ¼    cup grated Parmesan cheese

Layer onion and zucchini slices in a greased 2-quart casserole dish. Drizzle with 1/4 cup melted butter. Sprinkle with Mozzarella cheese. Mix remaining butter, breadcrumbs and Parmesan cheese and sprinkle on top. Bake at 350 degrees for 35-40 minutes or until vegetables are tender and browned on top.