Sweet Potato Pie
["2 pie crusts", "3 large sweet potatoes, peeled, sliced and boiled", "2 sticks butter", "1 1/2 c. sugar", "4 eggs, beaten", "1/2 c. buttermilk", "1 tsp. vanilla"]
["Mix everything together.", "Pour into 2 pie crusts.", "Bake at 350\u00b0 until set up; about 40 minutes to 1 hour."]
["sweet potatoes", "butter", "sugar", "eggs", "buttermilk", "vanilla"]