National Chocolate Chip Cookie Day arrives Tuesday, giving fans of the classic baked treat a fresh excuse to indulge, with dozens of restaurant chains, bakeries and hotels offering free cookies and discounted deals to mark the occasion.

The holiday, celebrated annually on Aug. 4, honors one of America's most beloved desserts. According to estimates from Mrs. Fields, Americans eat roughly 7 billion chocolate chip cookies every single year, cementing the treat's status as a staple of the American dessert landscape.

Where the chocolate chip cookie came from

The most widely told origin story credits Ruth Wakefield, a chef who ran the Toll House Inn with her husband in Whitman, Massachusetts, with inventing the chocolate chip cookie in 1937. According to the popular account, Wakefield cut up a semi-sweet chocolate bar and added the bits to her Butter Drop Do cookie recipe, expecting the chocolate to melt smoothly into the dough. Instead, the chocolate held its shape, creating the now-iconic cookie studded with distinct chocolate chunks. Wakefield published her recipe in 1938, and Nestlé soon began promoting it on its chocolate packaging and in the company's advertising, helping cement the cookie's popularity nationwide.

But the full history may be more complicated than the popular Toll House legend suggests. Pastry chef and author Stella Parks, in her 2017 book "BraveTart: Iconic American Desserts," uncovered evidence that chocolate chip cookies were advertised in supermarket circulars as early as the 1930s, and that recipes........

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