For preparing idly batter unniappam, heat 2 tsp of oil in a frying pan and splutter mustard seeds.
Add split bengal gram and roast it a little on low flame.
Then add ginger, shallots and green chillies. Roast it for some time till a fine smell comes.
Toss in the curry leaves.
Add this to idly batter.
Sprinkle salt and mix well.
Keep this mixture untouched for 5-10 minutes.
Pour remaining oil to appakallu(that is used to make neyyappam) and allow it to boil.
Pour the batter to each pit of the appakallu.
Cook each side of unniappam.
Idly batter unniappam is ready. Serve hot with coconut chutney.