Preheat your oven at 175°C/ 350°F.
Mash 4 ripe bananas using a fork and keep it aside.
Take room temperature butter and sugar in a bowl and mix it together using a hand whisker.
Add curd/yogurt to it and mix it well until combined.
Now add the mashed bananas to it and mix it.
Now add the sifted all purpose flour/maida, baking powder, baking soda and cinnamon powder to it. Mix it well.
Add vanilla essence to it and mix.
Now transfer it to a greased and lined baking tray. Make it smooth using a spatula.
Add some chocolate chunks or chocolate chips on the top.
Now take a banana, peel it and slice it in half. Place it on the top. Press it a little.
Add some refined sugar on top it to make a crunchy layer. This step is optional.
Bake it at 175°C/350°F for 45-50 minutes or until it's done.
Take it out and let it cool. Cut it in desired slices and your banana bread is ready.