National Sugar Cookie Day is observed on July 09, 2021. A sugar cookie is a cookie made from sugar, flour, butter, eggs, vanilla, and either baking powder or baking soda. Sugar cookies may be formed by hand or rolled and cut into shapes. They are commonly decorated with frosting, sprinkles, or a combination of both. They can also be cut into decorative shapes and figures. In North America, sugar cookies are popular during the holidays of Christmas and Halloween. The origin of National Sugar Cookie Day is unknown. However, the day might have been invented by someone who loves sugar cookies.