Egg Custard Pie
["1/2 c. margarine, melted", "1 1/4 c. sugar", "3 eggs", "1 Tbsp. self-rising flour", "1/4 c. buttermilk", "1 tsp. vanilla", "1 unbaked pie shell"]
["Mix all ingredients and pour into unbaked pie shell.", "Bake at 350\u00b0 for 15 minutes; lower temperature to 325\u00b0.", "Cook until firm."]
["margarine", "sugar", "eggs", "flour", "buttermilk", "vanilla", "shell"]