Sour Cream Lemon Pie
["1 (9-inch) pie crust, baked and cooled", "1 c. sugar", "3 Tbsp. cornstarch", "1/2 c. butter or oleo", "1 Tbsp. grated lemon rind", "1/4 c. lemon juice", "3 unbeaten egg yolks", "1 c. milk", "1 c. sour cream", "whipped dessert topping", "chopped walnuts"]
["Combine", "sugar\tand cornstarch in medium saucepan.", "Add butter, lemon rind,", "lemon\tjuice", "and egg yolks.", "Mix in milk and stir", "constantly", "over medium heat until thickened.", "Cool. Fold in sour", "cream", "and fill crust.", "Refrigerate at least one hour."]
["pie crust", "sugar", "cornstarch", "butter", "lemon rind", "lemon juice", "egg yolks", "milk", "sour cream", "walnuts"]