Iron Skillet Chocolate Pie
["1 c. sugar", "2 Tbsp. flour", "2 Tbsp. cocoa", "1/2 stick margarine", "3 eggs, separated", "1 c. milk", "vanilla to taste"]
["Mix sugar, flour and cocoa in small mixing bowl.", "Melt margarine in an iron skillet; add sugar mixture.", "Beat egg yolks. Add milk; beat together.", "Add a little at a time to mixture in skillet, stirring constantly.", "Cook slowly until thick.", "Add vanilla; cool.", "Pour into 8-inch pie crust (cooked).", "Top with meringue of egg whites.", "Bake for 8 to 10 minutes at 400\u00b0.", "Yields 6 to 8 servings."]
["sugar", "flour", "cocoa", "margarine", "eggs", "milk", "vanilla"]