- 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.