1/3 cup of butter, softened1/2 cup of sugar1 large egg, room temperature1/2 cup of mashed ripe banana1/2 teaspoon of vanilla extract1 and 1/4 cups of all-purpose flour1 teaspoon of baking powder1/4 teaspoon of salt1/8 teaspoon of baking soda1 cup of semisweet chocolate chips