Who invented the 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 as well as additional ingredients such as nuts or oatmeal. 

History
The chocolate chip cookie was invented by Ruth Graves Wakefield. She owned the Toll House Inn, in Whitman, Massachusetts, a very popular restaurant that featured home cooking in the 1930s. Her cookbook, Toll House Tried and True Recipes, was first published in 1936 by M. Barrows & Company, New York. The 1938 edition of the cookbook was the first to include the recipe “Toll House Chocolate Crunch Cookie” which rapidly became a favorite cookie in American homes.