Ingredients:

5 tablespoons butter, softened
1 cup organic sugar
1 large egg
2 egg whites
1 teaspoon vanilla extract
2 very ripe bananas, mashed
1 3/4 cups flour
1 teaspoon baking soda
1/2 teaspoon salt
1/4 teaspoon baking powder
1/3 cup walnuts

Directions:

1. Preheat oven to 350 degrees Fahrenheit. Grease bottom and sides of a bread loaf pan with butter.
2. Beat butter in a large bowl until light and fluffy. Add sugar and beat well. Add egg, egg whites and vanilla. Beat until well blended. Add mashed banana until incorporated.
3. Sift flour, baking soda, salt and baking powder in a medium bowl. Add flour mixture to butter mixture and mix well with walnuts.
4. Pour batter evenly into prepared loaf pan. Bake for 1 hour and 15 minutes, or until browned and toothpick inserted near center comes out clean.
5. Cool bread before slicing and serving with butter and jam.