The cooks must pair up and make the same exact dish -- without being able to see one another.

Chef Niki Nakayama gives the cooks a taste of Japan.

A team challenge pits boys against girls; guest judges Val Cantu, Jonathan Yao, Sherry Yard and Tanya Holland.

Legendary French chef Ludo Lefebvre joins to guest judge a mystery box challenge with a twist; the cooks must make two elevated French Bistro-style dishes in 90 minutes to guarantee themselves a spot in the semifinals.

The remaining four semifinalists tackle a brand-new culinary triathlon that sees the home cooks making three dishes back-to-back alongside three different legendary chefs: Nyesha Arrington, Suzette Gresham and chef Ramsay himself.

The remaining four semifinalists tackle a brand-new culinary triathlon that sees the home cooks making three dishes back-to-back alongside three different legendary chefs: Nyesha Arrington, Suzette Gresham and chef Ramsay himself.

Chef Curtis Stone guest judges for the semifinals when the top three battle in the appetizer round.

Chef Michael Cimarusti guest judges as the finalists try to impress with their entree and dessert dishes; the winner is crowned.

Former "Masterchef" contestants return; chefs compete in head-to-head audition battles.

Three chefs who competed in the junior edition return to compete for the first time as adults.

With only six aprons left, the judges give a lucky few chefs a chance to return to the kitchen.

All 20 chefs must cook something inspired by the dish that originally sent them home.

Cocktail connoisseur Shaun O'Neale gives the chefs their first mystery box challenge.

The top 18 travel to the U.S. Coast Guard base in Los Angeles for the first team challenge; the chefs work together to create a lunch for more than 100 men and women; one contestant will be eliminated.

Gordon Ramsay transforms his infamous beef wellington into a vegan dish made out of beets.

The remaining chefs must cook a Southern dish inspired by flavors from countries around the world.

One chef selects a dessert for each of their fellow competitors to bake to perfection.

More than 100 cowboys and cowgirls gather for a rodeo; the chefs divide into two teams.

The chefs face a "Winner's Mystery Box," curated by the Season 3 champion, Christine Ha.

The top 12 chefs are challenged to a tag-team cook-off.

The chefs partner with GrubHub to elevate a traditional take-out dish into a gourmet concoction.

The chefs are challenged to turn traditional gas station and road trip snacks into gourmet dishes.

The top nine chefs face a Mystery Box Challenge from Season 9 winner Gerron Hurt.

The top eight chefs are paired together and must communicate on opposite sides of a wall to create identical dishes.

The chefs must take over chef Wolfgang Puck's kitchen at Spago restaurant in Los Angeles.

The top five chefs are faced with two separate elimination challenges in the semifinals: a baked Alaska and an intricate lobster tortellini.

The top three chefs have made it to the finals and are one challenge away from being crowned the "MasterChef" champion; each chef has to prepare an appetizer and entrée in front of a live audience with the support of former judge Graham Elliot.

The three remaining chefs rush against the clock to complete their final entree and whip up a gourmet dessert with the help of former judge Christina Tosi. Then, a new MASTERCHEF champion is crowned.

Home cooks serve up their signature dishes to judges Gordon Ramsay, Joe Bastianich and Aarón Sánchez and guest judge Emeril Lagasse.

The home cooks have 45 minutes to impress the judges, including guest judge and legendary Michelin Star chef Curtis Stone.

The final audition round of the season; guest judge Paula Deen.

Legendary Michelin Star chef Masaharu Morimoto sets the bar high with his monkfish demonstration, leaving the cooks desperate to impress in their first elimination challenge.

One of the world's most influential pastry chefs, Sherry Yard, visits the kitchen; the dessert challenge puts the spotlight on the home cooks' baking skills for the first time.

The cooks must create a beef dish without knowing what cut of beef they will be cooking until the mystery box is opened; guest judge Michael Mina.

Michelin Star chef Nancy Silverton challenges the home cooks with a fresh pasta challenge.

The top 10 home cooks take on a Californian mystery box challenge; guest judge Jonathan Waxman.

The pioneering king of the food truck revolution, Roy Choi, tasks the home cooks with making a street food dish worthy of a Michelin star restaurant.

Chef Ramsay challenges the home cooks to create a dish for the most important legend yet -- their own personal legends; one home cook's dish ends up on the chopping block.