Pronounced FEHF-fuhr-noos, this cookie is served at Christmastime in many European countries.
Beat butter and sugar at medium speed with an electric mixer until blended. Add cinnamon and next 3 ingredients, beating until blended. Add eggs, flour, and baking powder, beating well. Stir in pecans.
Drop dough by heaping teaspoonfuls onto ungreased baking sheets.
Bake at 350° for 14 minutes. Remove cookies to wire racks to cool.