In the United States and Canada, a cookie's a small, flat-baked treat, containing milk, flour, eggs, and sugar, etc. In most English-speaking countries outside North America, the most common word for this's biscuit; in many regions both terms are used, while in others the two words have different meanings—a cookie's a plain bun in Scotland, while in the United States a biscuit's a kind of quick bread similar to a scone. Etymology Its name derives from the Dutch word koekje or (informal) k… (More on Cookies)