Vinegar Pie
["1 stick margarine, melted and cooled", "2 Tbsp. flour", "1 Tbsp. vinegar", "1 unbaked pie shell", "1 1/2 c. sugar", "1 Tbsp. vanilla", "3 eggs, beaten"]
["Mix ingredients well.", "Pour into pie crust and bake at 300\u00b0 for about 45 minutes."]
["margarine", "flour", "vinegar", "shell", "sugar", "vanilla", "eggs"]