In 2015, Luke Mangan, a 32-year-old from New South Wales, took home the top prize in MasterChef Australia. Mangan, a chef and restaurateur, has since opened several restaurants, including Luke's Kitchen and Bar.

In 2013, Samantha Spencelayh, a 26-year-old from New South Wales, won the fifth season of MasterChef Australia. Spencelayh, a chef and food blogger, has released a cookbook and appeared on various TV shows.

The fourth season of MasterChef Australia saw Matt Moran, a 28-year-old from New South Wales, emerge as the winner. Moran, a chef and restaurateur, has since opened several restaurants, including Matt Moran's Australian Bistro and Paramount.

If you saw a reference to Andy Allen winning, that was MasterChef Australia: The Professionals (2013), not the main series. Andy Allen later became a judge. Julie Goodwin won the first season, and Billie McKay is the only two-time winner of the main series (Seasons 7 and 14).