For the cookies 2 sticks (8 oz.) unsalted butter at room temperature 3/4 cup granulated sugar 3/4 teaspoon coarse salt zest of 1 medium sized lemon 1 teaspoon pure vanilla extract 1 large egg 2 1/2 cups sifted all-purpose flour. For the Lemon Glaze:1 cups confectioners’ sugar, sifted2 to 3 tablespoons... more