Lemon Bars
["2 c. flour", "1/2 c. powdered sugar", "1 c. (2 sticks) butter or margarine, softened", "1 (14 oz.) can sweetened condensed milk", "4 large eggs", "2/3 c. lemon juice", "1 Tbsp. flour", "1 tsp. baking powder", "1/4 tsp. salt", "4 drops yellow food coloring (optional)", "1 Tbsp. grated lemon peel", "sifted powdered sugar (optional)"]
["Preheat oven to 350\u00b0. For crust, combine flour and sugar in medium bowl. Cut in butter with pastry blender or 2 knives until mixture is crumbly. Press lightly onto bottom and halfway up sides of ungreased 13 x 9-inch baking pan. Bake for 20 minutes."]
["flour", "powdered sugar", "butter", "condensed milk", "eggs", "lemon juice", "flour", "baking powder", "salt", "coloring", "powdered sugar"]