Preheat the oven to 350 degrees F.

Grease a 9"×5″ loaf pan with butter and set aside

Using a stand mixer, beat together butter and sugar until fluffy.

Beat in eggs one at a time until smooth.

In another bowl, whisk together flour, baking soda, and salt.

Slowly add the dry mixture to the butter mixture and mix until it is incorporated.

Add the mashed bananas and then add the sour cream.

Gently stir in pecans.

Pour into the prepared loaf pan.

Bake at 350 degrees F for 50-60 minutes until a toothpick inserted into the center comes out clean.

Let cool in the pan for 15 min. on a cooling rack and then invert pan and release loaf and let cool completely on a cooling rack.