I have added badam additionally but you can skip and add cashews alone.
The rava should be roasted till nice aroma comes.
you can grind the roasted rava or you can add as such if you like it.
Adding milk powder enhances the taste its optional.
Even saffron is optional.
If you feel the mixture is too dry and feel difficult to make balls ,can add some milk to it.
Here I have not added any milk but it came out well.