Heat 3 tbsp oil in a pan on a medium flame add Split Urad Daal / Split Skinned black gram, Chana Daal / Split chickpea lentils Mustard Seeds and fry for 2 min
Add chopped ginger and green chilies, fry for 1 min.
Add Peanuts, Cashew nuts to the pan and fry for 2 to 3 min or till the peanuts and cashew nuts becomes slightly brown.
Add semolina or sooji to the pan.
Mix well and fry for another 2 to 3 mins.
Turn off the flame and allow the mixture to cool to room temperature, now add curd to the mixture mix well and allow it to rest for 5 to 10 mins.
Now take small amount of batter and put it on the idli trays. Steam the idlis for 10 to 15 min.
Your delicious Rava Idlis are ready. Server it with tangy coconut chutney and sambar.
Notes
You can add curry leaves, grated carrot or beans to the batter that enhances the taste of the idlis.