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.