Banana Chocolate Chip Muffins (Moist, Easy & Kid-Approved!)

Ingredients

• 1⅔ cups all-purpose flour, (spooned into measuring cup and leveled-off)
• 1 teaspoon baking powder
• 1 teaspoon baking soda
• ½ teaspoon salt
• 1/2 cup (1 stick) unsalted butter, at room temperature
• ¾ cup plus 2 tablespoons sugar
• 2 large eggs
• 1 cup mashed bananas, (from 2 to 3 overripe bananas)
• 1 teaspoon vanilla extract
• ⅓ cup sour cream or plain Greek yogurt ((low-fat is fine))
• Heaping ¾ cup semi-sweet chocolate chips