Amish Lemon Pie
["2 Tbsp. margarine, softened", "1 c. sugar", "3 eggs, separated", "3 Tbsp. flour", "1/2 tsp. salt", "juice and grated rind of 1 lemon", "1 1/2 c. hot milk", "1 (9-inch) unbaked pie shell", "Cool Whip or 1/2 pt. heavy whipped cream"]
["Cream margarine and sugar.", "Add egg yolks and beat well.", "Add flour, salt and lemon juice, rind and milk.", "Blend well.", "Beat egg whites until stiff; fold into lemon mixture.", "Pour into pie shell. Bake at 350\u00b0 for 35 minutes.", "Cool and top with Cool Whip. Serves 8."]
["margarine", "sugar", "eggs", "flour", "salt", "lemon", "hot milk", "shell", "heavy whipped cream"]