Double Chocolate Chip Cookie
A chocolate chip cookie is a drop cookie that originated in the United States and features chocolate chips as its distinguishing ingredient. The traditional recipe combines a dough composed of butter and both brown and white sugar with semi-sweet chocolate chips. Variations include recipes with other types of chocolate or additional ingredients, such as nuts or oatmeal.
More information from this link - http://en.wikipedia.org/wiki/Chocolate_chip_cookie