Take a mixing bowl and add rava and salt in it

Now add hot water in it and mix well and keep it aside for 5 minutes

Now heat up oil and add rai and urad dal in it

Now add kaju in it and cook for 30 seconds

Now add onion in it and cook for 2 minutes

Now add this tadka to the batter and mix well by adding 1/2 tsp baking soda

Now add fried kaju in idli mold

Add batter in idli mold

Steam idli for 10 minutes