Heat a non stick pan with 1 tsp ghee, roast the rava till it turns colour for about 2 mins. Remove to a bowl.
In the same bowl, heat the oil, temper with mustard seeds, urad dal, channa dal, cashews and saute for 2 secs, then add the chopped onions, green chilies and curry leaves.
Saute everything till the onions slightly change colour, then add the chopped cabbage and combine everything. When everything gets nicely cooked, add the tomatoes and stir well.
Now add the water, salt and bring to a boil. Add the roasted rava and simmer to mix. Cook on low flame for 10 mins. Add the ghee at the end.
Serve hot with chutneys.