Grace Jupp

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

Jamie Oliver returns for another day in the kitchen, as contestants battle to secure a place in the first immunity challenge.

There's a catch to the flavour bombs that Jamie Oliver has left behind for the contestants to cook with. They will only be revealed 15 minutes into the cook and must be included in the dish.

Contestants raid Shannon Bennett's fridge as they seek to create a tasty dish in 45 minutes, with the winner facing Vue de monde's Hugh Allen in the hope of winning immunity.

With elimination looming, the contestants embark on a two-day challenge, needing to marinate, pickle, brine and more in an overnight cook.

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 win the title of MasterChef Australia 2023.