Preheat oven to 325°. In a large bowl cream butter and sugar. Then mix in eggs, vanilla and sour cream.
2.
In a separate bowl whisk flour, baking powder, baking soda, and salt. Slowly add to sugar mixture and stir until combined. Fold in bananas, nuts, and chocolate chips. Pour into 2 large loaf pans or 4 small loaf pans. You can also make 24 muffins. Bake for 1 hour in a loaf pan, 35-45 minutes in a small loaf pan or 25 min in a muffin pan. You want the bread to be lightly browned.
3.
Make sure it comes clean with a toothpick.
4.
Once the bread is cooked, remove the bread from the pan and place on a cooling rack.
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