Add water to a pot of water and bring it to a boil.
Meanwhile, peel the banana and slice it into medium-thick pieces.
Once the water comes to a boil, add the banana slices. Cook in high heat.
Once the banana is cooked ( but still has a bite), strain out the water.
Heat oil in a pan. Add cumin seeds, urad dal and chana dal.
Add curry leaves and chopped onion. Fry till the onions turn translucent.
Meanwhile, combine grated coconut, dry red chillies and coriander seeds. Keep aside.
To the pan, add the cooked banana slices.
Mix. Then add the ground mixture. Add salt and mix.
Reduce the heat. Sprinkle a few drops of water. Cover and cook for about 1 minute.
Garnish with coriander leaves and serve.