Watford-raised YouTube star and rapper KSI has discovered that baking is not his calling after an hilariously disastrous attempt on The Great Celebrity Bake Off.

The 27-year-old, who went to Berkhamsted School, left fans laughing in his attempt to make a cherry lattice pie with custard for the technical challenge during The Great Celebrity Bake Off for Stand Up to Cancer last night (March 30).

But rather than trying to make a lattice, the rapper cut two pastry squares and stuck them on top of his pie.

He then tried to put the pie on the stand, only to cause a mess of cherry juice flowing from the side.

Prue Leith said he did not “even want to taste” the seemingly raw pastry covered in red juice.

And while he failed to impress in the first two rounds, he earned a Paul Hollywood handshake in recognition for his showstopper in the final challenge.

At the end of the programme he said: “I know what my calling is. Baking is not it.”

While the judges were unimpressed, many thanked KSI for being the highlight of their Tuesday night.

Little Mix star Jade Thirwall was crowned star baker at the end of the episode.

After being named as the winner, she said: “I can’t believe it, I’m in shock.

“Mum will be so proud. I think I might either frame the apron or I might just start wearing it all the time to remind myself of the success.”