Peterson developed the Egg McMuffin, which has become a McDonald's breakfast signature item, in 1972.
The Massive McMuffin was introduced to coincide with the AFL (Australian Football League) and NRL (Australian National Rugby League) season of 1998, when McDonald's Australia launched the Footy Burger (now the Double Quarter Pounder), Mini Footy Burger (double Cheeseburger) and Massive McMuffin.