1. Preheat oven to 350F Lightly grease 13x9 inch baking pan; set aside. Pour flour, butter, 1/2 cup confectioner's sugar,
1 tsp lemon zest and the salt in bowl or food processor. process until mixture forms coarse crumbs.
2.Press the crumb mixture evenly into prepared baking pan. Bake until golden, about 18 to 20 minutes.
3. Beat granulated sugar,eggs,lemon juice and remaining 3 teaspoons lemon zest in medium bowl with an electric
mixer set at medium bowl with an electric mixer set at medium speed until ingredients are well blended
4. Pour mixture evenly over warm crust return to oven, bake until center is set and edges are golden, about 18 to
20 minutes. remove pan to wire rack; cool immediately
5. Sprinkle sifted confectioner's sugar over top. cut into 2x1 1/2 inch bars.
6. Store lemon bars tightly covered at room temperature
