No Crust Sweet Potato Pie
["4 medium sized sweet potatoes, cooked and mashed", "1/2 c. all-purpose flour", "1/2 c. softened margarine", "1 egg", "1/2 tsp. vanilla", "1/2 tsp. cinnamon", "whipped cream (optional)"]
["Combine all ingredients except whipped cream, in blender.Blend at medium speed until well mixed.", "Pour into greased (or Pam sprayed) 9-inch pie pan.", "Bake at 350\u00b0 for 25 to 30 minutes.", "Can be served warm or cool with a dollop of Cool Whip or plain."]
["sweet potatoes", "all-purpose", "margarine", "egg", "vanilla", "cinnamon", "whipped cream"]