Preheat oven to 300 degrees F (150 degrees C).
Grease four 7x3 inch loaf pans. In a small bowl, stir together 1/4 cup white sugar and 1 teaspoon cinnamon. Dust pans lightly with cinnamon and sugar mixture.
In a large bowl, cream butter and sugar. Mix in eggs, mashed bananas, sour cream, vanilla and cinnamon. Add salt, baking soda, and flour to above mixture, and mix well. Stir in nuts.
Divide into prepared pans. Bake for one hour, or until toothpick inserted in center comes out clean.
Ingredients:
