These bakery-style banana chip muffins are made with overripe bananas, chocolate chips, and a blend of sugars, creating a soft, tall, and comforting treat that evokes the warm feeling of home baking.
Preheat oven to 425°F. Mix the mashed bananas, melted butter, and sugars. Add the eggs and vanilla and stir until smooth. Add the flour, baking soda, salt, and cinnamon. Mix just until combined, then fold in the chocolate chips. Divide the batter into 12 muffin cups, filling them nearly to the top. Bake at 425°F for 5 minutes, then reduce the temperature to 350°F and bake for another 12 to 15 minutes, until the tops are tall and golden and the centers are set but still soft.