Preheat oven to 350°F.
In the bowl of an electric mixer, combine eggs, oil, and melted butter. Beat for 45 seconds. Add eggs, one at a time, beating well after each addition.
Whisk together dry ingredients and add to egg mixture, alternately with water. Stir in sweet potatoes, vanilla and chopped nuts, if using.
Transfer batter into 3 buttered and floured loaf pans.
Bake at 350°F for about 60 minutes or until done.
Yield: 3 loaves.
Loaves may be wrapped tightly and frozen for up to 2 months.
Submitted by: CM