In 1938, Chef Ruth Graves Wakefield, co-founder of the Toll House Inn in Massachusetts, published the first ever recipe for the chocolate chip cookie, or as she called it the "Toll House Chocolate Crunch Cookie," which she developed in the inn's kitchen.
"We had been serving a thin butterscotch nut cookie with ice cream," she told reporters of her creation in the 1970s. "Everybody seemed to love it, but I was trying to give them something different. So I came up with Toll House cookie."
And the world couldn't be more thankful that she did—including Cookie Monster.
The Sesame Street character, famed for his love of cookies and preference for Chef Ruth Graves Wakefield's famous creation, recently joined forces with Bon Appétit to break down 100 years of cookie history. That included eating one cookie from every decade since the 1910s—you can guess which one represented the 1930s.
Here's a complete breakdown of Cookie Monster's journey through history's delicious side:
1920s: Sugar cookies
1930s: Chocolate chip cookies
1940s: Animal crackers
1960s: Nutter Butters
1970s: Fortune cookies
1990s: Black-and-white cookies
2010s: Cookie cake