Beat cheese and butter at medium speed with an electric mixer until creamy. Add flour and nuts; beat until blended.

Shape dough into 2 (8") logs. Wrap logs in wax paper, and chill 2 hours or until firm. Cut into 1/4"-thick slices, and place on lightly greased baking sheets. Brush lightly with beaten egg white. Press herb sprigs firmly into each slice.

Bake at 350° for 12 to 15 minutes or until golden. Cool 1 minute on baking sheets; remove to wire racks to cool completely.

Make-Ahead Tip: You can chill logs of dough overnight, and slice and bake the next day.