The celebrity chef, who has appeared as a guest in the last two seasons of the reality television show, was reportedly encouraged by Channel Ten to accept a permanent role in the next series.
Moran told the ABC: "This show and the people involved in it have revolutionised the way Australians view food. Over the past two years I've had a small hand in that and from next season I look forward to contributing even more."
The network's chief programming officer David Mott added: "Matt is a fantastic, world renowned chef and has become a valued addition to the MasterChef family. We love what he has contributed so far to the show and 2011 will see his presence in the series increase significantly."
It is believed that the Seven Network was trying to get Moran to join its new version of Iron Chef.