In a bowl add maida, baking powder, baking soda and sieve at least thrice and keep aside. Grind banana to a smooth paste (or you can mash them with hands) now add milk, oil, vanilla essence to it and fold in sugar and mix well until the sugar dissolves.
Now add the sieved flour to it, and mix well until creamy consistency. Then add chopped walnuts to it (Reserve some for topping).
Preheat oven to 190 deg C. Mean while spoon the mixture in the muffin tray till 3/4th add in the remaining walnuts and bake for 20 â€“ 27 mnts. Check in after 20 mnts and bake accordingly. Muffins stay soft for 2 to 3 days.
You can use any type of banana (Adjust sugar accordingly).
The mixture will start rising after 15 mnts of baking.
Don't forget to add walnuts on topping, it adds up the taste.
You can avoid milk in the recipe replacing it with oil(Replacing with 1/4 Cup of oil or Butter)