Sweet Potato Pie
["1 small plus 2 large sweet potatoes", "2 c. sugar", "4 eggs", "1 tsp. vanilla extract", "1 tsp. baking powder", "2 sticks butter"]
["Peel sweet potatoes.", "Boil until soft.", "Remove potatoes from water.", "Place in bowl.", "Mash well.", "Add all other ingredients. Mix well.", "Pour into two unbaked pie shells (9-inch).", "Bake at 350\u00b0 for 45 minutes or until pie is brown."]
["sweet potatoes", "sugar", "eggs", "vanilla extract", "baking powder", "butter"]