Banana Muffins

     1/2 c butter

     1 c sugar

     2 eggs

     1 c mashed ripe banana

     1/4 tsp vanilla

     1/4 c sour cream

     1 1/2 c flour

     dash salt

     1 tsp baking soda

Preheat oven to 350 degrees.  Line 18 muffin cups with liners.  Cream butter and sugar.  Add eggs, one at a time.  Add banana, vanilla, and sour cream.  Stir together  flour, salt, and baking soda.  Add to banana mixture.  Divide batter among liners.  Bake for 25 minutes.