I made this when I lived in Germany. Christmas baking was a big deal over there so these were just one of many cookie recipes we made. But definitely one of my favorites!
Preheat oven to 350 F. Mix all ingredients in a large mixing bowl, and let stand for 1 hour in the fridge.
Roll small walnut-sized balls of dough into strips that can be shaped into a horn (or horseshoe) shape, and brush with egg white.
Bake for 15-17 minutes.
Storage: Let these sit in a sealed container overnight. The flavors really develop when they are allowed to sit until the next day. They won't taste like much right out of the oven.
Notes
Please note that the nutrition data below is a ballpark figure. Exact data is not possible.