Nana's Banana Bread (angies)

I got this recipe from my great friend Angie. I literally tried 5 recipes one day to find the best recipe and this one topped the charts.

Nana’s Banana Bread

5 tablespoons butter

1/2 cup granulated sugar

1/2 cup firmly packed light brown sugar

1 large egg

2 egg whites

1 teaspoon vanilla extract

3-4 ripe mashed bananas

1 3/4 cups all-purpose flour

1 teaspoon baking soda

1 teaspoon salt

1/4 teaspoon baking powder

1/2 cup heavy cream

1/3 cup chopped walnuts

Directions:

1.Preheat oven to 350 degrees, and spray bottom of a loaf pan with non-stick cooking spray.2.Beat butter in a large bowl with an electric mixer until light and fluffy. 3.Add granulated Sugar and brown sugar; Beat until well blended. 4.Add egg, egg whites and vanilla; blend. 5.Mix in the mashed bananas, and beat the mixture on high speed for 30 seconds. 6.In a separate bowl, combine flour, baking soda, salt and baking powder.7.Add flour mixture to butter mixture alternately with the cream, ending with the cream. 8.Mix in the walnuts. 9.Pour batter evenly into prepared  loaf pan.10.Bake until golden brown, and toothpick inserted near the center comes out clean (About one hour and fifteen minutes.)