Easy breezy. Just like any Indian gravy with onion and tomatoes . Just add cashew paste at the add. How to make cashew paste ? Soak raw cashews in a water for 15 mins and blend it. It will make gravy creamy and little sweet.
This nonsense guru I know always says when it comes to right and wrong there are 3 options . Right , wrong or be happy.
Which option do you pick ?