Ingredients

• ⅔ cup all-purpose flour
• ⅔ cup whole-wheat flour
• ½ teaspoon baking soda
• ½ teaspoon ground cinnamon
• ¼ teaspoon ground ginger
• ¼ teaspoon salt
• ⅔ cup old-fashioned rolled oats plus 1 tablespoon, divided
• 1½ cups mashed ripe banana
• ½ cup packed light brown sugar
• ½ cup plain whole-milk yogurt
• ¼ cup neutral oil, such as canola or avocado
• 1 teaspoon vanilla extract
• 1 large egg, at room temperature
• ⅓ cup dark chocolate chips (60-70%) plus 1 tablespoon, divided