Cookie Day, or Kakans dag, is observed in Sweden every December 17. This holiday celebrates the enjoyment of cookies, which are an integral part of Swedish coffee culture. The tradition of baking cookies dates back to ancient times, with professional bakers in Sweden mentioned as early as the Middle Ages. The custom of serving coffee with cookies became popular in the 19th century, evolving into the well-known fika, a coffee break accompanied by sweet treats. Among the iconic Swedish cookies to enjoy are Brysselkex, Chokladsnittar, and Hallongrottor. While the origins of Cookie Day are unclear, it is a day for Swedes to indulge in their favorite cookies, often paired with coffee or tea, and anyone worldwide can join in by baking and sharing Swedish cookie recipes.