Old Fashioned Buttermilk Pie
["1 Tbsp. unsalted butter", "3 large eggs", "1/2 c. buttermilk", "9-inch unbaked pie crust", "1 1/4 c. sugar", "1 Tbsp. flour", "1 tsp. vanilla"]
["Preheat oven to 300\u00b0.", "Beat butter and sugar in large mixing bowl.", "Stir in eggs, flour, buttermilk and vanilla.", "Pour into pie crust.", "Bake until the tip of a knife inserted in the center comes out clean, about 45 minutes.", "Cool slightly before serving."]
["unsalted butter", "eggs", "buttermilk", "crust", "sugar", "flour", "vanilla"]