1. In a large bowl combine soup, milk and pepper. Stir in mozzarella cheese, cooked ziti and toss gently to coat.
2. Turn into a lightly greased 2 qt casserole dish, sprinkle with parmesan cheese. Combine the bread crumbs and melted margarine and sprinkle in rows over pasta.
3. Bake at 375 degrees for 35 minutes or until hot and bubbling.