Take a deep bowl and add suji/semolina, yogurt, salt, and mix it well. Now add water gradually and make a smooth batter
Mix it well with spoon.
Cover it and let the batter rest for 15-20 minutes.
Take a non stick pan and put oil in it, once the oil becomes hot add mustard seed and let it crackle.
Now add few curry leaves, grated ginger and all the chopped veggies (Onion, fresh and boiled peas, capsicum, carrot, French beans).
Sauté it on medium flame and cook till it becomes little soft.
Once the veggies become little soft, add boiled and mashed potatoes, finely chopped spring onions and all the spices-Salt to taste, red chilly powder, turmeric powder, coriander powder, mango powder, garam masala, sambhar masala, mix it well with the mixture.
After 15 minutes uncovered the batter and you will see the batter has become smooth and add water accordingly to get the right consistency, mix it well.
Batter is ready now but before adding eno keep the water for boiling and grease the mould.
Take a deep pan and pour 1 1/2 glasses of water in it and let the water boil.
Now take an Idli mould and grease the idli moulds with some oil and keep aside.
At the very end add eno and mix it well.
Now take your greased idli moulds and spoon a tablespoon of batter in the bottom and put the mixture patties in the center of batter.
Now spoon a tablespoon of batter again on top. Make sure that everything is totally covered.
Repeat the same process for rest of the idli moulds.
Put the idli mould in boiling water, cover with the lid and cook it for 7-8 minutes on medium flame.
After 7-8 minutes uncovered the lid and you will see the Stuffed Rawa idli has become fluffy. Take out the idli mould from the pan and let it cool down for sometime. Once it cools down a bit scratch the sides with knife and remove the Stuffed Rawa Idli from it.
Cut Stuffed Rava Idli into half and serve hot. It goes well with coconut/nariyal chutney but if you do not have nariyal chutney can serve with any coriander chutney or tomato ketchup.
Notes: I have used sour curd/yogurt to make stuffed idli but If you are using fresh curd, then add 1 ½ of cup and add water accordingly for right consistency. If you are making Stuffed rava idli in batches then do not add soda or eno at once. Put eno in the mixture which you are going to steam and let the extra batter wait on counter top to finish the first batch steaming. Once you finish the first batch steaming then again put soda/eno in second batch and steam.