All purpose flour 1 1/2cup
Baking soda 1/2tsp
Vanilla essence 1tsp
Melted butter 1/3cup
Preheat oven to 350F
Take a bowl mash banana and mix with melted butter, egg, sugar, vanilla essence and mix it well.
sprinkle salt and baking soda over that mixture and mix.
Add flour to that mixture and combined well with wooden spoon.
Don't over mix the batter(it results bread becomes rubbery and hard).
now pour it in a bread loaf pan or in a square pan, bake for 50 minutes or until it done(toothpick inserted into the center comes out clean)
remove from the pan after few minutes and cool it on wire rack.
slice to serve
note:I used square pan. i like cashews very much, just i used some cashews on top.
if you want nuts then add walnuts