Mary's Moist Banana Bread

3/4 c. butter
3 c. sugar
3 eggs
7 ripe bananas
1/2 tsp. salt
4 1/2 c. flour
3 tsp. soda
1 12 oz. container sour cream
2 tsp. vanilla
Pecans (optional)

Cream butter & sugar. Add eggs, pureed bananas, sour cream, and vanilla; mix well. Then add salt, soda, and flour. Mix. Add pecans (if using). Pour into greased and floured loaf pans (2 or 3) and bake at 300 for 1 hour.