LEMON ICEBOX COOKIES

Steps:

• Combine flour, and cornmeal in medium bowl.
• Beat butter and granulated sugar in large mixer bowl at medium speed until light and fluffy.
• Beat in egg yolks, lemon juice and lemon peel until well blended.
• With mixer at low speed, beat in dry ingredients just until combined.
• Divide dough in half.
• Shape each half into a 10-inch log.
• Wrap each log in plastic wrap and freeze until firm, 1 hour.
• (Can be made ahead. Cover and freeze up to 1 month. Let stand at room temperature 10 minutes before slicing).
• Heat oven to 350 degrees.
• Unwrap and cut each log into 1/4-inch-thick slices.
• Arrange slices 1 inch apart on ungreased cookie sheets.
• Bake 10 to 12 minutes, until firm and golden at edges.
• Transfer cookies to wire racks and cool completely.
• Make Lemon Icing: Whisk confectioners' sugar, lemon juice and 3 teaspoons water until smooth and spreadable, adding remaining 1 teaspoon water to thin icing if necessary.
• Spread tops of each cookie with icing; sprinkle with pistachios.
• Let cookies stand until icing is set, 15 minutes.