Step 1

Preheat oven to 325 degrees F. Grease two 7X3 inch loaf pans.

Step 2

Make the batter in a large bowl, mix butter, sugar, and eggs. Mash the bananas and add to the bowl along with the sour cream, vanilla extract, cinnamon, and nutmeg. Stir until well blended.

Step 3

In a separate bowl, stir the flour and baking soda together. This assures that the baking soda does not end up in a clump somewhere in the batter.

Step 4

Add the dry ingredients to the banana mixture and stir until well blended.

Step 5

Pour into two greased loaf pans. Bake uncovered 1 hour and 10 minutes on 325 degrees Fahrenheit.