It's Nigella Lawson Week. Contestants have 75 minutes to create a delicious dish based on Nigella's divine indulgences. The top three will have a chance at immunity while the bottom three face elimination.

The bottom three from Nigella's invention test face elimination in what might be the toughest pressure test ever, as contestants have just one hour to recreate Nigella's three-course meal.

Matt Preston and Nigella Lawson arrive at the contestant house in the middle of the night as the three best from Nigella's invention test are asked to create a midnight snack for a chance at immunity.

Split into three teams, each team must prepare one savoury dish and two sweet dishes to sell at a fete held in honour of Nigella Lawson with all proceeds donated to the Royal Children's Hospital.

The losing fete challenge team now face elimination. Contestants must correctly name cakes, fail to do so and they will need to impress the judges with a cake of their own to stay in the competition.

Culinary goddess Nigella Lawson arrives in the kitchen for a week of challenges and surprises. The lid is lifted on Nigella's mystery box to reveal some of her favourite ingredients.

The bottom three contestants from the previous invention test will face off in this episode's pressure test. The contestants have 75 minutes to complete four of Nigella Lawson's favourite chocolate dishes.

The winning contestant from the mystery box challenge joins the top three contestants from the invention test in this episode's two round immunity challenge.

In a team service challenge, it will be a battle of the brunches, as in two groups of 10, they take over two cafes. Contestants will have real customers, with real orders and real dockets.

The contestants in the losing team are in the kitchen for what will be the last time for one of them. Plus, the first Masterclass of the season with Nigella Lawson.

It's Nigella Week. MasterChef favourite Nigella Lawson sets the mystery box ingredients. Whoever cooks the best dish heads into immunity, but the rest must compete in a relay invention test.

It's pressure test time for the losing team from the previous challenge. The contestants have 90 minutes to cook Nigella's infamous roast chicken with two sides and gravy. Who will fail to impress and be sent home?

Nigella week continues, and the four best cooks from her Mystery Box challenge must cook a dish that celebrates custard. The top contestant will compete against Coskun Uysal, of renowned Tulum restaurant.

Nigella and contestants are given historical recipes at the State Library of Victoria to inspire a three-course meal. The team who create the least impressive menu will head into the next elimination.

The bottom team from the previous challenge are presented with an array of condiments they must identify correctly. The first five to guess incorrectly head into an elimination cook. Plus, a Masterclass with Nigella.

Superstars Week kicks off with Nigella Lawson. Contestants must recreate Nigella's favourite dish based on her detailed description, with no ingredient list, recipe or visual reference to work from.