Ingredients
Method
- Preheat oven to 350°F (175°C) and line a baking sheet with parchment.
- Cream butter and brown sugar until fluffy, then beat in egg, vanilla, and mashed banana.
- Stir together flour, baking soda, salt, and espresso powder; fold into wet ingredients.
- Fold in dark chocolate chunks, drop tablespoon-sized scoops onto the sheet.
- Bake 10–12 minutes until edges set but centers are soft; cool 5 minutes on sheet.