Peanut Butter Pie
["1 (9-inch) baked pie shell", "1 c. powdered sugar", "1/2 c. peanut butter", "1/4 c. cornstarch", "2/3 c. sugar", "2 c. milk", "3 egg yolks, beaten", "2 Tbsp. margarine", "1 tsp. vanilla", "3 egg whites", "6 Tbsp. sugar"]
["Combine powdered sugar and peanut butter.", "Blend until appearance of biscuit mix.", "Spread 3/4 of this mixture on bottom of pie shell.", "Combine cornstarch and sugar.", "Add egg yolks and gradually add to cornstarch and sugar.", "Mix well, then cook in heavy saucepan until mixture thickens.", "Add vanilla and margarine. Pour into a pie shell.", "Top with meringue."]
["shell", "powdered sugar", "peanut butter", "cornstarch", "sugar", "milk", "egg yolks", "margarine", "vanilla", "egg whites", "sugar"]