1cup240ml mashed ripe banana (from about 2 large bananas)
½cup110g packed dark brown sugar
1large egg
¼cup60ml vegetable oil
⅓cup80ml milk
1teaspoonpure vanilla extract
½cup85g dark chocolate chips (optional)
Instructions
Preheat your oven to 350°F and grease the holes of a standard 12-cup muffin pan well with butter.
Sift both flours, cocoa, baking powder, baking soda, cinnamon and salt into a medium bowl. Add back the bran left in the sieve from the whole wheat flour and then whisk to blend evenly.
In a large bowl, whisk together mashed banana, brown sugar and egg until smooth. Whisk in vegetable oil, milk and vanilla until well blended. Stir in chocolate chips if desired. Add the flour mixture and fold very gently with a spatula until just combined. A few streaks of flour may still remain and they will get mixed in as you portion out the mixture (it is best to not over-mix a muffin batter).
Fill each greased muffin cup full with the batter, using up all of the mixture. Bake for 16-18 minutes, until muffin tops spring back when touched gently. Let cool in pan for 5 minutes before transferring individually to a wire rack to cool.