The former designer was spotted in Bea's of Bloomsbury’s Holborn tearoom – the perfect place for a baker to be – sketching out ideas for her new business, which is reportedly edible greetings cards.
A spokesman for Frances, who wowed the judges with a three-tiered wedding cake inspired by A Midsummer Night's Dream, told the Daily Telegraph's City Diary that, while it’s early days, Francis intends to join the baking market in some form.
The 31-year-old has said that, while the baking market is "saturated", she is considering producing an original book of her own.
"The baking market is completely saturated so I don't want to do a book that's anything like one that's already out there. I'd like to create a book that's got all my rough sketches and ideas."
Judging by the success of John Whaite, who won the trophy in the hit show's last series, the quirky baker is bound to have her cake and eat it.
Since scooping the title, John has gone on to publish his own book, John Whaite Bakes: Recipes For Every Day And Every Mood, written another set for release next year and made various TV appearances.
The bakers aren't the only winners of the mighty popular baking programme.
Great British Bake Off is BBC Two's most-watched programme in a decade, after an average 8.4 million viewers saw Frances Quinn beat fellow finalists psychologist Kimberley Wilson and former model Ruby Tandoh.
At its peak, 9.1 million people tuned in to Tuesday night's finale, beating the record held by a 2007 episode of Top Gear, by more than 400,000 viewers.