In a large bowl combine flour, baking soda and salt; set aside. Using a fork mash 2 bananas roughly so they have a little texture.

With an electric mixer using the whisk wire, whip the remaining two bananas along with the brown sugar for a good 3 minutes. Add the melted butter, vanilla essence, eggs and beat well, scraping down the sides using a spatula.

Now add the dry ingredients and mix until incorporated. Fold the mashed bananas and nuts into the batter. Using the spoon, put the batter halfway into the muffin pan.

Pre-heat the oven at 350 F. Tap the muffin pan so that the batter is distributed evenly without any air bubbles.

Bake it for about 18-20 minutes or until the toothpick comes out clean. Let it cool down for a few before taking them out of the pan.

Serve warm or hot with a cup of coffee for breakfast or eat it as a snack.