Mahmoul
You'll find various iterations of this filled cookie throughout the Middle East, where it's an absolute must-have during the holidays. This recipe comes from the Lebanese family of King Arthur baking school instructor Karen Ogrinc. Her family's nut filling recipe is in the Baker's tips below.
Note: While this recipe calls for a mahmoul mold, see "tips," at the bottom, for information on how to make the cookies without a mold.