Trim fat and bone from meat;cut meat into 4 to 6 serving pieces.Grease large skillet lightly with fat from meat.Brown meat thoroughly on one side;turn and season with 1/4 teaspoon salt. Brown other side of meat;turn and season with remaining salt.
Push meat to one section of skillet.Add onions,cook and stir until tender.Stir in beef broth,soy sauce and garlic.Cover;simmer 10 minutes or until meat is tender. Add green peppers.Cover,simmer 5 more minutes.
Blend cornstarch and water;stir gradually into meat mixture.Cook,stirring constantly,until mixture thickens and boils.Boil and stir for 1 minute.Add tomatoes;heat thoroughly. Serve over rice.