Preheat oven to 190 degree C. Line muffin tray with cupcake cases and set aside.
Take flour, wheat bran, baking soda, salt, baking powder, chocolate chips in a bowl and mix well.
Take oil, egg, banana, milk, sugar and whisk well till combined.
Add the dry ingredients in this and fold gently.
Use a icecream scoop to scoop it into moulds, fill right to the top. Sprinkle some nuts on top.
Now bake this for 18 to 20 mins.
Remove it and let it cool for 5 mins in the pan. Now remove it and place it in a cooling rack and cool it down.
Serve warm with a cup of tea or milk.