Soak moong dal in warm water for an hour, then drain the water and blend it with green chilies into a smooth paste.
Put the paste in a bowl, add turmeric, salt, pepper, and a pinch of hing. Mix well.
Add chopped onion, carrot, capsicum, and coriander. Mix everything well.
Take a little batter in a separate bowl, add eno and mix gently.
Butter both sides of the bread slices. Spread moong dal batter on one side, then flip and apply on the other side.
Toast the bread until it is golden brown on both sides.
Serve it hot with sauce or mayonnaise.