Marks & Spencer's new limited-edition Chocolate and Cornflake Cookies have gone viral, prompting shoppers to queue in stores and 'fight' over the treats as staff struggle to keep shelves stocked.
The £3.25 bag of five cookies launched on November 4, 2026, and quickly became the retailer's most sought-after bakery item, with long queues forming at Foodhall counters across the UK.
Viral Footage Shows Shoppers Grabbing Cookies
TikTok user @foodieszn filmed shoppers frantically snatching bags of the cookie the moment they appeared on shelves, with overlay text reading, 'Not everyone fighting because of the new Cornflake M&S cookies...'. The footage racked up more than 17,000 likes, leaving viewers astonished.
One person wrote: "This is not the behaviour one expects from M&S customers." Another added: "What is the world coming to... just make them yourself, I did." A third commented: "Another reason I hate people, absolutely ridiculous."
A further clip shared by shopper Macy captured customers forming queues inside another branch, where staff baking the treats handed them directly to waiting customers, unable to get them onto shelves. Text overlaid read, 'The M&S cookie trend is getting out of hand.'
Mixed Reactions Across the UK
Reactions differ by location. One customer remarked: "I live in Norwich, there's loads just sat there on the shelves. Why's everyone going mad in other cities?"
Opinion on the cookies is split. While TikTok excitement fuels queues and sell-outs, regular customers on Reddit, Mumsnet and food blogs remain unconvinced, with many believing the viral sensation doesn't match reality.
What Makes the Cookie Special
M&S describes the cookie as: "Rich, chewy cookies made with black treacle for a deep caramel flavour, with crunchy caramel pieces and crisp cornflakes, finished with milk chocolate."
Those who appreciate bold, darker baking tastes have commended the black treacle and dark chocolate, noting a toasted caramel richness. When cooked just right, enthusiasts highlight the interplay between tender dough, melting chocolate and crunchy cornflakes, comparing it to a "no-bake chocolate tiffin".
Sampled straight from the bakery counter or paired with chilled milk, the cookies scored far more favourably than when consumed cold later.
