Cookie:
Combine flour, powdered sugar and cornstarch in medium bowl; set aside.

Beat butter in large bowl at medium speed until creamy.  Reduce speed to low; add flour mixture, lemon juice and lemon zest.  Beat until dough forms.

Shape dough into 2 (8-inch) logs; press in sides to form triangles with 1-inch base and 2-inch sides.  Wrap each log in plastic food wrap; refrigerate until firm (2 hours).

Heat oven to 350°F.  Cut logs into 3/8-inch slices with sharp knife.  Place 1 inch apart onto ungreased cookie sheets.  Insert pretzel half into bottom edge to form tree trunk.  Press zigzag-style potato masher or knife handle into cookies to create horizontal lines for “trees”.  Decorate with decorator sprinkles.

Bake for 9 to 11 minutes or until edges are lightly browned.  Cool 1 minute on cookie sheet; remove to cooling rack

Courtesy of Land O' Lakes, Inc.