Created by Simon Morgan & Paul Thacker on Guinness World Records Day, the massive treat measures a whopping 59cm long and 39cm wide and weighs 15.73kg.
The duo said they came up with the idea of creating a giant biscuit in a bid to raise money for charity while also gaining themselves a place in the record books.
Asked why they picked the humble custard cream to recreate the lads said they'd already made a big Bourbon and Jammie Dodger and wanted to do something different. Obviously.
The big biscuit -- which took 11 and a half hours to create -- is now being auctioned off for charity on eBay and bids have already reached £400 with a day left.