Step 1

In a small bowl, mash bananas, brown sugar, vanilla extract, and ground cinnamon, whisk until well mixed  – set aside

Step 2

In a larger mixing bowl, cream butter and sugar together until light and fluffy

Step 3

Add in eggs and beat until mixed

Step 4

To your wet mixture, sift in flour, baking soda, and salt.  Stir until mixed

Step 5

Add in sour cream and black walnuts

Step 6

Combine mashed banana mix into large bowl of ingredients

Step 7

Pour into baking pan(s)