In a large bowl, combine the egg, 1/4 cup spaghetti sauce, bread crumbs and pepper. Crumble beef over mixture and mix well. Shape into four oval patties; set aside.
Combine butter and seasonings; brush over both sides of bread. In a large skillet, toast bread until lightly browned; set aside.
In the same skillet, cook patties over medium heat for 4-6 minutes on each side or until no longer pink. ( Please don't squash the patty down with a spatula while cooking it--you lose the juices!)
Spoon remaining sauce over patties; sprinkle with cheese. Cover and cook until cheese is melted. Place each patty on a piece of toast. Serve with the extra slice of toast and a little more spaghetti sauce (warmed).