Soak split green moong in water for 5 to 6 hours.I soak it overnight to make it for morning breakfast.
After soaking, drain the water.Grind together, soaked moong dal, ginger, 2 green chillies and cumin seeds into a fine paste .
The batter should be semi thick , thicker than the idli batter.
Now to this ground batter add finely chopped onions, green chillies, coriander leaves, baking soda , rava and salt.
Mix well and keep aside for 10 mins.
Heat oil in the unniappam chatti ( round pan with small fissures).
I used very little oil; if using non stick pan you can just brush little oil.
Pour batter with a spoon into each fissures.After a minute turn it with a skewer or fork and cook for a minute or so.
Fry all the paniyarams, drain and keep in absorbent paper.
Serve hot with green chutney or tomato ketchup.