The term 'Cookie Snackwich' refers to a type of snack made by sandwiching two Oreo cookies together with a creamy filling. The Oreo cookie is a popular brand of chocolate sandwich cookie that has been around since 1912. It consists of two chocolate wafers with a sweet cream filling in between. The Cookie Snackwich is a variation of the classic Oreo cookie, but with a thicker layer of cream filling and a more indulgent taste.