The first new episode of the cooking competition will air on July 31 with a new lineup of celebrity contestants.
16 famous faces - including Sugababe Heidi Range, Bottom star Ade Edmondson and comics Les Dennis and Katy Brand - will battle it out to impress long-standing judges John Torode and Gregg Wallace.
Actors John Thomson, Denise Black and Brian Capron and sports stars Phillips Idowu, Matthew Hoggard and Joe Calzaghe are also set to show off their culinary talents.
TV presenter Miranda Krestovnikoff, Boyzone's Shane Lynch, rapper Speech Debelle, Jo Wood and Janet Street-Porter complete the lineup.
The show will air across six weeks, with the celebrities facing challenges such as mass catering for Cirque du Soleil and the Harlequins rugby team.
Exec producer Carla-Maria Lawson said: "The return of Celebrity MasterChef to this BBC One peak timeslot sees thrills and spills and some extraordinary cooking from our lineup of well-known faces.
"In this series, the contestants' enthusiasm in their pursuit of the MasterChef trophy is palpable, often inspiring and sometimes very, very funny."
Former Celebrity MasterChef winners include Lisa Faulkner and Phil Vickery.