Instructions

In a large skillet, cook beef and onion over medium heat until meat is no longer pink; drain. Stir in the tomato sauce, salt and oregano; simmer for 5-10 minutes.
Cut bread in half lengthwise and then widthwise. Spread meat mixture on cut side of bread; sprinkle with cheese, olives and pepperoni if desired.
Loosely wrap bread individually in pieces of heavy-duty foil (about 24x18 in.); seal. Grill, covered, over medium heat for 15-20 minutes or until heated through. Cut each into fourths.