The new addition is already attracting attention from food lovers, with the combination of chocolate and crunchy cornflakes offering a twist on the classic cookie.

From its tempting chocolate flavour to the added crunch of cornflakes, the unusual pairing is giving shoppers another reason to head to the M&S bakery section. The cookies launched on November 4, with a pack of five initially priced at £3.25, and their popularity has already sparked chaotic scenes in some stores.

One viral TikTok video filmed at M&S's Angel branch in Islington, showed crowds gathering around the bakery counter as customers scrambled to get their hands on freshly baked batches. The footage has attracted more than 642,000 views, with shoppers appearing to grab multiple packets as soon as they became available.

The frenzy has even raised concerns about the pressure being placed on bakery staff, with the person behind the video describing the scenes as overwhelming and comparing them to pandemic-era panic buying.

M&S has since acknowledged the popularity of the new cookies, saying they have been incredibly popular with both customers and colleagues. The retailer also confirmed that its bakery teams receive additional support when launching products expected to attract high demand.

With social media helping fuel the excitement, the latest cookie craze looks set to make another M&S bakery favourite out of an unexpected combination.

Residents, have you tried the new cookies yet?