Boooooo Hamaaaaaaan!!
These are Hamantaschen.
They are the official cookies of the Jewish holiday Purim.
Image by David Silverman/Staff / Getty Images
Marked by costume parties and copious drinking, Purim is a raucous Jewish holiday that celebrates a foiled plot to kill all of the Jews in ancient Persia.
They are named after this guy, Haman.
Via: chabad.org