In bowl of electric mixer, cream butter and sugar on high speed for about 6 minutes, or until light and fluffy. Add egg and vanilla. Beat until blended. Fold in flour until dough is soft and well combined.
Transfer dough to a pastry bag fitted with star tip. Pipe a variety of shapes onto a baking sheet, spacing them well apart
Bake for 15 minutes or, until golden brown.
Let cool. Brush jam or chocolate over half the cookie bottoms, sandwiching uncovered cookies on top. Dip one end of each cookie in more jam or chocolate, then dip in ground nuts.
Arrange cookies on a serving plate.
Variation
Substitute 2 tablespoons of the all-purpose flour with the same amount of cocoa powder.
