Preheat oven to 400°F In a medium bowl combine egg, 1/4 cup of the pasta sauce, the bread crumbs, salt, and pepper. Add ground beef; mix well.
Cut mozzarella cheese block into four 2 1/4x3/4x1/2 inch logs or cut each string cheese stick in half crosswise. Wrap a lice of prosciutto around each cheese log. Shape one-fourth of the beef mixture around each cheese log to form a loaf. Flatten the four meat loaves to 1 1/2 inches thick and place in a shallow baking pan.
Bake for 20 minutes or until internal temperature registers 160 F on an instant-read thermometer. Meanwhile, prepare fettuccine according to package directions; drain well and keep warm. In a small saucepan heat remaining pasta sauce over medium heat until bubbly.
Arrange meat loaves over hot fettuccine. Spoon sauce over top and sprinkle with shredded parmesan cheese.