chocolate chip sour cream banana bread

i made choc. chip banana bread yesterday- it's wicked good- i'm too lazy to post pictures though.

Chocolate Chip Sour Cream Banana Bread

Ingredients:
5 Tbsp. butter
1/2 c. sugar
1/2 c. brown sugar
1 egg
2 egg whites
1 tsp. vanilla1
1 1/2 c. mashed bananas (about 3-4; the blacker the better!)
1 3/4 c. flour
1 tsp. baking soda
1/2 tsp. salt
1/4 tsp. baking powder
1/2 c. sour cream
1/2 tsp. ground cinnamon
1/8 tsp. nutmeg

Directions:
Preheat oven to 350°. Grease and flour a 9X5 loaf pan, making sure to cover each corner with the butter then flour, so the bread comes out easily after baking.
Cream butter and sugars together with mixer on about a medium speed. Let mixer run for a minute or two to whip the mixture.
While that mixture whips together, combine dry ingredients in a separate bowl.
Lower speed of butter mixture and add egg, egg whites, and vanilla. Mix to incorporate.
Add dry mixture and sour cream to butter mixture, alternating a small amount of each at a time, starting and ending with the dry mixture. Blend for a minute to whip and incorporate.
Slowly add mashed bananas to the mix and blend quickly to incorporate.
Evenly pour mixture into pre-greased loaf pan.
Bake for approximately 1hr 10 mins. at 350° degrees.