Buttermilk Pie
["1/2 stick margarine, melted", "1 c. sugar, stirred in margarine", "3 whole eggs, added one at a time", "1/4 c. buttermilk", "vanilla"]
["Mix well.", "Pour into unbaked pie shell.", "Bake at 325\u00b0 until set."]
["margarine", "sugar", "eggs", "buttermilk", "vanilla"]