Cook noodles according to package directions. Rinse in cold water; drain well., In a large bowl, combine the spinach, ricotta cheese, egg, egg white, 1/4 cup Parmesan cheese, garlic, basil, pepper and nutmeg. Combine mozzarella cheese and remaining Parmesan cheese., In a 13x9-in. baking dish coated with cooking spray, layer three noodles, 3/4 cup tomato sauce, 1 cup spinach mixture and 3/4 cup cheese mixture. Repeat layers three times., Bake, uncovered, at 375° for 45-50 minutes or until bubbly. Let stand for 10-15 minutes before cutting.