Preheat oven to 300 and bake bread for 90 minutes. Lightly grease and flour two 8 x 4 bread pans.*Side note: I have changed the sugar amount from the recipe. It called for 3 cups. I thought it was too sweet. So I changed it to 2 cups. Also I have changed the sugar up by adding one cup regular sugar and one brown cup before. It tastes good that way too. Make the bread however you decide to.
In large bowl cream together butter and the sugar until light and fluffy. Stir in eggs one at a time. Add vanilla. Stir in the mashed bananas and sour cream.
In a separate bowl combine the flour, cinnamon, baking powder, baking soda and walnuts. You can pick a different nut or dont use them or add chocolate chips.
Bake for 90 minutes until a tooth can be inserted and comes out clean.
Remove from pan and let cool on a cooling rack. Eat at room temp, still a little hot or cold. The banana flavor tastes stronger the next day or two.
