cook pasta according to box directions

preheat oven to 450°

in large bowl, combine ricotta, 1 and 1/2 cups mozzarella, parmesan cheese, egg, parsley, salt and pepper; spoon into cool pasta.

spread thin layer of sauce in large glass baking dish; arrange pasta in single layer over pasta. pour remaining sauce over pasta; cover with foil.

bake 40 minutes. remove foil and top with remaining mozzarella cheese; bake another 15 minutes longer or until bubbly.