1/2 cup butter or margarine
1 cup sugar
2 eggs
3 medium ripe bananas

1 3/4 cups flour
1 tsp. baking soda
1/2 tsp. baking powder
1/2 tsp. salt

Cream butter and sugar together.  Beat in eggs one at a time, beating until smooth.  Add mashed bananas and blend in.

Stir in flour, baking soda, baking powder and salt.  Pour into a loaf pan.  Bake in oven at 350F for 60 minutes.