But it all got a bit much for viewers, who took to Twitter to complain about the awkward interview.One viewer wrote: "Ever imagined what your Dad coming on to your girlfriend would look like - watch Michel Roux Jr cook for Rebecca Fergusson.#Saturday Kitchen" Another sarcastically added: "Your voice is delicious, as delicious as this dish I'm cooking" said Michel Roux Jr as he boiled cabbage.
The singer's new album, Superwoman, is set to be released next month.
She performed her new single on Strictly earlier this month, alongside fellow musical guest, Olly Murs.
Presenter James Martin quit the show earlier this year, and the BBC were forced to defend the series after more than a million viewers departed with him.
The BBC One cooking programme , which is currently being taken over by guest presenters, was dubbed a flop after it was claimed viewers had refused to tune in since the well-loved chef , who fronted the show for a decade, quit in February.
BBC Good Food Festival was once again a delicious success with foodies from across the area tucking into culinary delights from Surrey and beyond.
From sizzling sausages and decadent brownies to spicy tacos and botanical gins, the choice was sensational.
Held at Hampton Court Palace in Easy Molesey from August 27-29, cooks and celebrity chefs wowed families in the demonstration tent while picnic-goers enjoyed live music in the beautiful grounds.
The likes of Paul Hollywood, John Torode, double Michelin-starred chef Michel Roux Jr and Emily Roux, Bake Off star Martha Collison and Masterchef winner Jane Devonshire whipped up a selection of summer dishes live on stage.
Fans could then listen to them in the interview tent before grabbing a copy of their books for a personal signing.
Michel Roux Jr seemed to be pretty taken with Rebecca Ferguson on Saturday Kitchen today.
Viewers noticed the chef trying his best to flirt up a storm with the former X Factor star and they couldn't help but majorly cringe.