The campaigning MP has edged ahead of West Bromwich East's Tom Watson according to a survey by website LabourList.
And on a visit to Wolverhampton she took a recommendation from the Express & Star to try the famous orange, battered chips from the Major Fish Restaurant in Bilston after revealing she was after a chip butty.
Meeting with members of the New Park Village Tenant Management Co-Operative, Walthamstow MP Miss Creasy:
Labelled the House of Commons 'Hogwarts gone wrong'
Told Labour supporters to stop 'mourning' the General Election defeat and start campaigning
Vowed to put the 'faith and fire' back into the party's movement.
Prior to her meeting in New Park Village with Heath Town councillor Milkinder Jaspal, Miss Creasy had sent a message on Twitter asking for advice on where to get a 'chip butty'.
The hungry MP was advised by Wolverhampton born author Caitlin Moran to head for Charlie's Fish Bar in Lichfield Street because she claimed they would 'batter anything'.
However, Miss Creasy was intrigued when she was informed of the Black Country delicacy of battered chips, served at chippies like Major's in Church Street.
"Battered chips? That sounds genius to me," she said.
Later she took the recommendation and tweeted a photographer of herself, along with Councillor Jaspal, with the caption: "I am love with these chips! Batter is a brilliant addition."
Miss Creasy, aged 38, is now the main challenger to Mr Watson, who has been comfortably ahead ever since announcing his candidacy the day after the General Election.
He has the backing of 23 constituency Labour parties in the West Midlands, while Miss Creasy is backed by just Telford.
However, the survey of Labour members suggests that Miss Creasy has opened up a four point lead.
Miss Creasy said she wanted to end the perception some people have of Labour as a 'machine' that just turns up at the door and asks for votes at election time.
"What I want us to do is work with everyone," she said. "Most of my adult life in the Labour party has been defined by people being in tribes and therefore cut out - 'you're Blairite, you're Brownite, you're a Trot' - I'm not tribal, I'm ideological. Politics can make a difference.
"The government's response to child poverty is to try to get rid of the term. There are different choices we can make. But we need to show we're not just an opposition, we're an alternative.
"Jeremy Corbyn is tapping into that feeling that people want more than a leaflet round - they want it to mean something.
"The idea that a movement that 300,000 people agree with each other all the time - that's not a political party, that's a cult.
"It's fine to disagree and debate. But whether they think themselves on the left or the right of the party, they want this to mean something.
"We've got to put the fire and faith back into the Labour movement."