Cookies
2 cups butter or margarine, softened
1 cup powdered sugar
3 1/2 cups Gold Medal® all-purpose flour
1/2 cup cornstarch
2 tablespoons grated lime peel
1 teaspoon vanilla
Granulated sugar
Lime Glaze and Decoration
1 cup powdered sugar
2 tablespoons Key lime or regular lime juice
2 tubes (0.68 oz each) Betty Crocker® green decorating gel, if desired

1. Heat oven to 350°F. In large bowl, beat butter and 1 cup powdered sugar with electric mixer on medium speed, or mix with spoon. Stir in flour, cornstarch, lime peel and vanilla until well blended.
2. Shape dough into 3/4-inch balls. Place about 2 inches apart on ungreased cookie sheet. Press bottom of glass into dough to grease, then dip into granulated sugar; press on dough balls until 1/4 inch thick.
3. Bake 9 to 11 minutes or until edges are light golden brown. Remove from cookie sheet to wire rack. Cool completely, about 30 minutes.
4. In small bowl, stir together 1 cup powdered sugar and the lime juice. Stir in additional juice if necessary. Spread glaze over cookies. Squeeze drops of decorating gel on glazed cookies; drag toothpick through gel for marbled design.
High Altitude (3500-6500 ft) No change.

Source: bettycrocker.com