A thumbprint cookie is a type of cookie characterized by its soft and chewy texture and a thumbprint-shaped indentation in the center. The indentation is typically filled with a sweet filling, such as jam, jelly, or frosting.
Thumbprint cookies are believed to have originated in Scotland in the 19th century. The cookies were originally called “petticoat tails” because their shape resembled the flounced hem of a woman’s petticoat. Thumbprint cookies are now popular around the world and are often enjoyed during the holiday season.