Combine all ingredients for Sauce in small pan. Bring to a boil, reduce to simmer, covered, until needed. In a large mixing bowl, combine all ingredients for Beef Loaf, mix well. Cut tow pieces of foil 10x12” and 16x12”. On the smaller sheet, press 1/3 of beef mixture into an 8x10 “ rectangle, about 1” thick. Place on a gbroiler pan. Press the remaining 2/3 beef into a 10x15” rectangle on remianing sheet. For filling, saute onion, peppers and mushrooms in butter unitl lightly browned and translucent. Add olives, ricotta cheese, one-half the mozarella cheese and 1/2 c. sauce. Heat until the cheese begins to melt. Spoon mixture onto center of smaler meat rectangle. Lifting larger rectangle, turn upside down and place over filling. Seal edges by pressing together. Place braciola in 350 degree oven and bake 50 min. Spoon 3/4 C. suace over top of loaf; sprinkle with remaining mozarella. Return to oven; bake until cheese melts. Remove loaf from broiler pan and carefully place on serving platter. Surround with cooked spaghetti and top with remaining sauce. Serves 10-12. Preparation time: 2 hours.
-from Grass & Grain?