Prue, 77, spoiled the results of the Great British Bake Off final on Twitter this morning when she named the winner hours before the episode was set to air.
Betway have odds on the judge to leave after this series at 6/4 following her epic social media fail.
"No one told me judging #GBBO final would be so emotional," she tweeted earlier today. "I wanted them all to win. Bravo," she wrote, before naming the victor.
Prue has since apologised to her 9,000 Twitter followers for her error, saying: "I am so sorry to the fans of the show for my mistake this morning, I am in a different time zone and mortified by my error."
Great British Bake Off judge Prue Leith accidentally revealed the winner today
Prue has since apologised her her error
New GBBO judge Prue Leith
Mon, March 27, 2017
Great British Bake Off judge Prue Leith in pictures.
1 of 20
Prue Leith in pictures
Meanwhile, the bookmakers also predict that former Great British Bake Off champion Nadiya Hussain, 32, could return to the series next year as a presenter, with odds at 11/2.
She tops a list of potential replacements for Noel Fielding, 44, who they also suggest could announce his retirement from the show, with odds at 5/4 for him to leave first.
Betway's Alan Alger told Express.co.uk: "The Bake Off's move to Channel 4 has been more or less seamless, with the exception of the new faces fronting the show.
Great British Bake Off 2017 winner SPOILED by judge Prue Leith
Great British Bake Off 2017: Kate Lyon hits out after vicious backl…
Prue is odds on to be the first of the Bake Off line-up to leave after this series
Bookies say that Nadiya Hussain could replace Prue or Noel Fielding
"Producers will now have to decide whether the current presenters fit the bill, with our odds suggesting Noel Fielding could be the one to walk at 5/4.
"Prue Leith has done herself no favours by congratulating the winner some 12 hours before the eagerly anticipated final," he added. "And has been backed into 6/4 from 15/8 to leave the show."
Aside from Nadiya, last year's winner Candice Brown, 32, is also tipped to be ready to take over from any departing presenters, with odds at 8/1.
The Great British Bake Off final airs tonight at 8pm on Channel 4.