Banana Bread

1/2 cup butter
1/4 cup brown sugar
3/4 cup white sugar
Cream together. Add:
2 eggs
2 tsp vanilla
1 1/2 cup flour
1 tsp baking soda
1 tsp salt
mix together. Add:
1 cup mashed banana
1/2 cup sour cream
1/2 cup pecans or walnuts chopped fine