Malissa Fedele

The judges are joined by special guest Jamie Oliver, as the contestants prepare for a season of secrets and surprises.

Jamie Oliver returns to present the contestants with two difficult challenges: a 15-minute meal and his mushroom and spinach rotolo.

It's a race for the last spot in the immunity cook. There are four coloured cloches with secret flavour bombs left by Jamie Oliver, but they won't be revealed until 15 minutes into the task.

Living up to its name, the greatest Mystery Box in the history of MasterChef is unveiled during Big Week. To avoid the Pressure Test, competitors must think creatively and play with the flavour to win the round.

It's Grand Finale Day and whichever cook scores the most points across two rounds will lift the trophy aloft, claiming $250,000 in prize money and winning the title of MasterChef Australia 2023.

The contestants must prepare an elimination dish that highlights one chosen colour.