Step 1

Preparation Position rack in center of oven and preheat to 350°F. Line baking sheet with parchment paper. Sift flour, baking powder and salt into medium bowl. Mix sugar, melted butter, 3 eggs, vanilla extract and ground aniseed in large bowl. Add flour mixture to egg mixture and stir with wooden spoon until well blended. Mix in almonds.

Step 2

Divide dough in half. Using floured hands, shape each dough half into 13 1/2-inch-long, 2 1/2-inch-wide log. Transfer both logs to prepared baking sheet, spacing apart. Whisk egg white in small bowl until foamy; brush over top and sides of each dough log.

Step 3

Bake logs until golden brown (logs will spread), about 30 minutes. Cool logs completely on sheet on rack, about 25 minutes. Maintain oven temperature.

Step 4

Transfer logs to work surface; discard parchment paper. Using serrated knife, cut logs on diagonal into 1/2-inch-wide slices. Arrange slices, cut side down, on same baking sheet. Bake 12 minutes. Turn biscotti over; bake until just beginning to color, about 8 minutes. Transfer to rack and cool. (Can be prepared 1 week ahead. Store in airtight container at room temperature.)