Key Lime Shortbread Cookies

DIRECTIONS

• Combine flour, sugar, and cornstarch. Set aside.
• Beat butter at medium speed until creamy.
• Beat in flour mixture, zest and juice at low speed until dough forms. Dough will be crumbly.
• divide dough in half and roll into 2 10-inch logs. Wrap in plastic food wrap and refrigerate until firm, about 2 hours.
• Preheat oven to 350°F.
• Slice cookies into 1/4" slices and place 1" apart on an ungreased baking sheet.
• Bake for 9-11 minutes or until edges start to brown.
• Remove from pan and let cookies cool completely.
• Meanwhile, make glaze. Put sugar and zest into a medium bowl. Stir in enough lime juice to get glaze to spreading consistancy.
• Spoon or brush glaze onto the tops of cooled cookies.
• Allow glaze to harden, about 15 minutes.