Combine 1/2 the gravy with the ground beef, bread cubes, egg, onion, salt and pepper. Shape into loaf about 7" x 3". Place in shallow baking pan (not a loaf pan). Bake at 375 for 45 minutes. Separate rolls and place crosswise over top and sides of meatloaf overlapping slightly. Completely cover with rolls. Bake 15 minutes more. Meanwhile heat rest of the gravy to serve on the side.