Luscious Lemon Pie
["3 Tbsp. cornstarch", "1 c. sugar", "1/4 c. butter", "1/4 c. lemon juice", "3 egg yolks", "1 c. milk", "1 c. sour cream"]
["Combine everything but sour cream.", "Cook over medium heat, stirring until thick.", "Cool and add sour cream.", "Pour in crust and chill."]
["cornstarch", "sugar", "butter", "lemon juice", "egg yolks", "milk", "sour cream"]