You can also use mushroom instead of paneer or a combination of paneer & mushroom. The original recipe uses a combination of paneer & mushroom. However I’ve made this only with paneer. I use ghee only for greasing the baking dish. For everything else, I use sunflower oil. For cashew paste, soak around 10 cashews in 2 tbsp hot water for 10-15 mins. Grind to a smooth paste. Recipe adapted from Vanitha