Key Lime Squares
["1 c. butter or margarine", "1/2 c. confectioners sugar", "2 c. plus 6 Tbsp. all-purpose flour", "1/8 tsp. salt", "4 eggs", "2 c. granulated sugar", "6 Tbsp. lime juice", "1 Tbsp. grated lime or lemon rind", "confectioners sugar (for dusting)"]
["Preheat oven to 350\u00b0.", "Combine butter/margarine, confectioners sugar, 2 cups flour and salt.", "Mix with a pastry blender or two knives until mixture is well blended.", "Pat evenly into a 15 x 10 x 1-inch jelly roll pan and bake 20 minutes.", "Beat eggs lightly. Stir in granulated sugar, 6 tablespoons flour, lime juice and rind. Mix well and spread over baked crust.", "Bake 25 minutes longer. Remove from oven and sift confectioners sugar over the top.", "Let cool and cut into squares."]
["butter", "confectioners sugar", "flour", "salt", "eggs", "sugar", "lime juice", "lime", "confectioners sugar"]