TV
The extended versions will see five amateur chefs compete, and a winner picked, within each episode. Channel 4 has ordered 22 from ITV Productions to be shown later this year.
It has also commissioned 50 more of the regular daytime editions which will be aired over ten weeks with one chef cooking each day.
A spokeswoman said it would be the first original primetime outing for the show though no exact slot has yet been confirmed. Repeats of series two and three are currently running on Channel 4 and More 4.
Meanwhile, Channel 4 has also booked 55 new episodes of A Place in the Sun from Freeform. They are expected to remain in the 8pm Friday slot.
More: TV
Tube Talk
'Skins' Dakota Blue Richards preview Q&ASkins star Dakota Blue Richards tells us what we can expect in Franky's episode.
TV Interviews
'Skins' Dakota Blue Richards preview Q&ASkins star Dakota Blue Richards tells us what we can expect in Franky's episode.
Reality Bites
Does Simon Cowell have new SuBo?: VideoWatch a clip of Jonathan Antoine, who is tipped for success on BGT.
TV Ratings
'Take Me Out' climbs to 5.1mThe ITV1 dating show fails to register a significant boost despite last week's controversy.
