Ruth Graves Wakefield was working at the Toll House Inn in the late 1930s when she created the chocolate chip cookie by adding chopped-up bits of a Nestlé bar to a cookie dough. The cookie was a huge hit, and it caused a spike in the sales of Nestlé bars. Later, Nestlé started marketing chocolate chips specifically for cookies, and they made a deal with Toll House to print the cookie recipe on its package.