Banana Nut Bread

Whenever we had bananas turning a little too ripe ( which wasn't often), my mom would make this great banana nut bread.  It's dense and not too sweet. Great with coffee or a cold glass of milk and spread with a little butter.

1/4 cup butter (1/2 stick)
3/4 cup sugar
1 egg
2 very ripe bananas, mashed
3 Tbl sour milk (mix 1 tsp vinegar into 1/4 cup milk)
2 cups flour
1/4 tsp salt
1/4 tsp baking soda
1/2 tsp baking powder
1/2 cup chopped nuts

Cream the butter and sugar together. Beat in the egg and add the mashed bananas and sour milk.
Sift (or whisk) the flour, salt, baking soda, and baking powder and slowly stir into the wet mixture.  Fold in the nuts and put the batter into a greased loaf pan.  Bake at 350F for about 1 hour.