It's back to win and 23 returning contestants are back for another shot at the trophy. Gordon Ramsay greets them to announce that they are splitting into three teams and taking on a service challenge!

Gordon Ramsay is in the kitchen to put 8 cooks through a Keeping Up with Challenge. They'll work at record pace to deliver TWO of Gordon's dishes, in a fight for the only immunity pin of the season.

To win immunity and a chance to see their creation added to Gordon Ramsay's new London restaurant's menu at 22 Bishopsgate, they must cook and elevate their favourite late-night snack!

Inspired by watching an emotional video on their MasterChef journeys, the contestants must cook a dish that represents who they are now. But this will result in the first elimination for the season.

Peter Gilmore has brought a Mystery Box packed with ingredients from his most iconic dishes, which have been responsible for some of the competition's greatest moments of triumph and heart break.

Chocolatier Kirsten Tibballs, joins the MasterChef kitchen for the very first pressure test of the series. With her toughest recipe yet she challenges the contestants with her Coffee Caviar Tin.

Legendary Australian chef, Shannon Bennett, is cooking in the MC kitchen. After his demo, whoever creates the most delicious dish in 20 minutes will win immunity and be safe from Sunday's elimination.

The cooks take part in a one-inch cube taste test in teams. Their elected team leader could land their whole team in an elimination cook.

Today's mystery box challenge comes with a twist: contestants must select one of the judges' fridges and use whatever is inside to create a dish worthy for a chance at immunity and a grand prize.

Immunity is up for grabs today. The contestants have one hour to recreate a Curtis Stone dish. But with a twist: they'll have to do it without the recipe!

Jean-Christophe leads a French service challenge as teams compete for immunity.

In today's elimination challenge, the contestants have to create a dish with an element of table-side theatre.

The MasterChef contestants face off with a mystery box with a wrapped up surprise.

Renowned pastry chef Steven He delivers a magical pressure test with his Balloon Puppy Cake.

In Sydney, teams compete for immunity in a pub inspired service challenge.

Seafood extraordinaire Josh Niland is in the kitchen for his own creative take on Surf and Turf. The challenge is to create a modern dish using both meat and seafood and survive elimination.

MasterChef welcomes Ixta Belfrage for a debut visit. The chef has brought a Mystery Box with a twist. There is one secret ingredient the contestants will only discover halfway into the cook.

Today's pressure test raises the bar with the contestants tasked to recreate guest judge Blayne Bertoncello's highly technical dessert, not once, but in five consistent dishes.

It's the classic MasterChef team-relay challenge where four teams must compete create a savoury dish that uses potatoes in at least two ways.

Twelve MasterChef contestants are faced with a bust of judge Jean-Christophe Novelli made entirely of butter. Fighting for their place in the competition, they must create a dish featuring butter.

In a heartwarming and hilarious Mystery Box challenge, contestants must cook a dish worthy of a Nonna's table under the watchful eyes of Sooshi Mango, for a shot at immunity.

The MasterChef contestants face a pressure test given by Dessert Master winner John Demetrios. In the hope of winning immunity, they'll have to recreate his Chocolate Meteor.

It's viral week and vying for immunity once again, the contestants are challenged to create the ultimate scrollable cold meats sandwich followed by a viral dish mash-up.

Social media superstar Andy Cooks sets two viral challenges. First, the contestants must create an epic Cheese Pull. In Round Two, the bottom five make a Satisfying Slice. One will be eliminated.

Today's mystery box is a head-to-head battle between those fatefully matched with the same Lee Kum Kee sauce to earn their spot in tomorrow's immunity challenge.

The contestants design their own pressure test inspired by seven different Connoisseur ice cream flavours. The best two will win immunity.

It's Dough-Fest in the MasterChef garden and time for the contestants to test their team work in an epic service challenge. The teams have four hours to cook a dough-based savoury and sweet.

The cooks take part in a laksa taste-test, set by one of Australia's most renowned Malaysian chefs. First four cooks who guess the wrong ingredient, must fight for their place in the competition.

The first cook of Sweet Week, and for today's mystery box, each contestant must incorporate an element of 'goo' into their desserts. The four cooks with the top dishes will compete for immunity.

Poh sets today's Sweet Week pressure test providing not one, but three of her extraordinary desserts for the cooks to replicate. Laura, Beau, Andre and Callum will battle it out to win immunity.

As Sweet Week continues, a jelly-gem taste test will determine which five contestants will go on to cook a dish incorporating at least one of those ingredients for immunity.