These chewy almond meringue cookies originated in Sicily, where some of the world’s best pine nuts are cultivated. The cookies are as popular in their homeland as they are in Italian-American bakeries.
Heat oven to 300°F. Combine almonds and granulated sugar in a food processor and process until very finely ground, about 4 minutes. Add confectioners’ sugar and egg whites and process until a smooth dough forms. Transfer dough to a piping bag fitted with a ½″ round ti