Best Ever Banana Bread

3/4 cup dark brown sugar
1/2 cup white sugar
1/2 softened butter or margarine
2 eggs
1 1/2 cups mashed very ripe bananas (3-4 medium
1/2 cup buttermilk (I use the powered-mix according to directions)
1 tsp vanilla
2 1/2 cups all purpose flour
1 tsp baking soda
1 cup chopped nuts, if desired
1 large jar stage 3 baby bananas

Heat oven to 350. Grease bottoms only of 2 8X4 loaf pans or 1 9X5.
In large bowl, mix sugar and butter. Add eggs, bananas, baby bananas, buttermilk and vanilla; beat with electric mixer until smooth. Stir in flour, baking soda, and nuts just until moistened. Pour into pans.
Bake 8 inch loaves 1 hour, 9 inch loaf 1 1/4 hours or until toothpick inserted in center comes out clean. Cool 10 minutes. Loosen sides of loaves from pans; remove from pans to cooling rack.