Nana's Banana Bread

My friend from high school Kathy was looking for a Banana Bread Recipe and although she wanted one with only a few ingredients, I had to share this. It is the BEST recipe for Banana Bread.

Nana's Banana Bread

5 T. butter
1/2 c. sugar
1/2 c. firmly packed brown sugar (I use light brown sugar)
1 large egg
2 egg whites
1 t. vanilla extract
1 1/2 c. mashed, very ripe bananas (I use 3 medium sized)
1 3/4 c. all purpose flour
1 t. baking soda
1/2 t. salt
1/4 t. baking powder
1/2 c. heavy cream (I use 1/2 and 1/2 if I don't have the cream)
1/3 c. chopped walnuts (optional, I don't use them).

1. Preheat oven to 350 degrees. Spray bottom of a 9 x 5 x 3" loaf pan with non-stick cooking spray.
2. Beat butter in large bowl with electric mixer set on medium speed until light and fluffy. Add sugar and brown sugar; beat well. Add egg, egg whites and vanilla extract; beat until well blended. Add mashed banana, and beat on high speed 30 seconds.
3. Combine flour, baking soda, salt and baking powder in medium bowl. Add flour mixture to butter mixture alternately with cream, ending with flour mixture. Add walnuts (if using them) to batter; mix well.
4. Pour batter evenly into prepared loaf pan. Bake until browned and toothpick inserted near center comes out clean, about 1 hour and 15 minutes.
5. Cool bread in pan on wire rack 10 minutes. Remove bread from pan; cool completely on wire rack. Slice and serve with butter or jam.