Banana Bread

1/2 cup butter
1 cup sugar
1 egg
2 Tbsp milk
1 tsp baking soda
1 1/2 cup mashed banana
1 1/2 cup flour
1 tsp baking powder
1 tsp vanilla

Mix together and bake at 350F for approx 45-60 mins.
If baking in muffin tray - approx 20mins