Rebekah's Banana Nut Bread

1 stick butter
1 c. sugar
2 eggs

1 c. mashed bananas
1/2 c. sour cream
1 tsp. vanilla

2 c. flour
1 tsp. soda
1/2 tsp. salt

Bake at 350 degrees for 45 minutes --TOPPING OR MIDDLE LAYER:

1/4 c. sugar
1 tsp. cinnamon
1/2 c. pecans