Preheat oven to 350 degrees F and line loaf pan with parchment paper or spray with non-stick cooking spray, set aside.

In a large bowl, cream together butter, granulated sugar, and brown sugar for about 2 minutes.

Add eggs to butter mixture one egg at a time making sure each are combined before adding the next. Mix in the sour cream and vanilla extract.

Then add mashed bananas

In small bowl add flour, baking powder, salt and baking soda and whisk slightly. Add flour mixture (in three additions to wet mixture in large bowl. Completely incorporating the flour with each addition.

Lastly, add the chocolate chips and fold in.

Spoon batter into the prepared loaf pan. Try to make the batter as level across as possible.

Place in the oven and bake for 45-55 minutes. Test bread in the center with a toothpick at 45 minutes. If toothpick pulls out wet batter add 5 minutes more minutes until toothpick comes out clean. Tent bread at 45 minutes if you do not prefer a dark loaf.

Remove from the oven and let bread cool in pan for 10-15 minutes. Then move from loaf pan when the bread is cool to the touch and let completely cool on wire rack.

Slice and serve.