According to Official Guinness Records,
The record for the largest bag of cookies is 3200 kg (7054 lb) and was achieved by the Juniorchamber Veenendaal-Rijnvallei in Veenendaal, the Netherlands, on 19 November 2005.
Length: 5.5 m, width: 2.0 m, height: 3.0 m, filled with 207.860 Bart Foundation cookies. More than 220 volunteers participated in the record attempt and put over 3600 hours of work in the largest bag of cookies. €41.500 was raised for the Bart Foundation which supports people with a severe disease to achieve their ambitions.
For a complete list of 2005 records, please visit 2005 Guinness Records in Netherlands.