do you enjoy chocolate chip cookies?, they were invented in 1938 just by chopping up chocolate bars into cookies
Who invented them?
Ruth Graves Wakefield invented them, she was a Chef, business owner and author. 
OK thats good ,what are they made of?
Chocolate chip cookie
A chocolate chip cookie is a drop cookie that originated in the United States and features chocolate chips or chocolate morsels as its distinguishing ingredient. Circa 1938, Ruth Graves Wakefield added chopped up bits from a Nestlé semi-sweet chocolate bar into a cookie.
The traditional recipe starts with a dough composed of butter and both brown and white sugar, semi-sweet chocolate chips and vanilla. Variations on the recipe may add other types of chocolate, as well as additional ingredients such as nuts or oatmeal.
Ruth cooked and served all the food and soon gained local fame for her lobster dinners and desserts. The restaurant had many people, including US Ambassador Joseph Kennedy, Sr. Her chocolate chip cookies soon became very popular. She invented chocolate chip cookies around 1938.
She added chopped up bits from a Nestlé semi-sweet chocolate bar into a cookie. It is often incorrectly reported that the cookie was an accident, and that Wakefield expected the chocolate chunks to melt making chocolate cookies. In reality, Wakefield stated that she