Mash bananas with fork nicely.
Add 2 tbsp of oil and mix. Add curd and mix it well.
Add sugar and baking powder and nicely mix it till sugar dissolves
Add cinnamon powder, egg, cardamom powder and vanilla essence and mix it.
Now sieve the flour and add to the batter in small portions and mix it.
Don't beat or over mix or else it will be hard.
Line the loaf pan with oil paper.
Mix the walnuts with plain flour and add to the batter and mix
Pour the batter into the pan and coat it with sliced bananas
In convection mode bake it for 180 c for 35 minutes
Since we are using wheat flour it takes extra 5-10 minutes to bake
Use of curd makes the cake super soft