Cookies are most commonly baked until crisp or just long enough that they remain soft, but some kinds of cookies are not baked at all. Cookies are made in a wide variety of styles, using an array of ingredients, including sugars, spices, chocolate, butter, peanut butter, nuts or dried fruits. The softness of a cookie may depend upon how long it is baked.
In the U.S. and Canada, a cookie is a small, flat, baked treat, usually containing flour, eggs, sugar and either butter or cooking oil, and often includes ingredients such as raisins, oats or chocolate chips. Cookies came to America in the early English settlement (17th Century), although the name “koekje” arrived with the Dutch. This became Anglicized to “cookie.” (from Wikipedia and www.cute-calendar.com)