National Black and White Cookie Day

National Black and White Cookie Day, observed annually on September 14, celebrates the soft, cake-like cookie also known as a half moon cookie. Its classic design divides the top between vanilla and chocolate icing, traditionally made with fondant or boiled icing. Despite being called a cookie, it has a cakey base and is sometimes described as a hybrid of cookie and cake. The Nibble’s overview of black-and-white cookie history notes that the treat emerged in New York City in the early 1900s, although its exact origin remains uncertain.

The earliest reference located by that source comes from a third-generation baker at Glaser’s Bakery, who said the bakery had made black-and-white cookies since opening in 1902. The cookie became especially popular in Jewish bakeries and delis throughout New York during the mid-20th century. It later gained national attention after appearing in the 1994 Seinfeld episode “The Dinner Party,” in which Jerry’s “Look to the cookie!” remark used the cookie’s two contrasting halves as a metaphor for racial harmony.

Variations may use fluffy frosting instead of smooth fondant, and bakers sometimes replace the traditional colors with seasonal or themed combinations. Some also make cookies covered entirely in chocolate or vanilla icing, sometimes called “full moon cookies.”

How to Observe National Black and White Cookie Day

Celebrate by enjoying a fresh black-and-white cookie from a bakery or trying to make a batch at home. Use the day to compare the chocolate and vanilla halves, share cookies with friends or family, or explore variations such as half moon cookies with fluffy frosting. If you bake your own, The Nibble’s classic New York black-and-white cookie recipe provides instructions for preparing the cake-like cookies and dividing the icing between vanilla and chocolate.

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