Wash and pressure cook the dhal with 1 1/2 cups of water along with salt and turmeric powder until soft. Keep aside.
Take another pan and add oil as well as ghee. Temper with cumin seeds, pepper, curry leaves, chopped ginger, chopped green chilies and cashew nuts. After it is done add rava.
Roast the rava till you get the aroma and the colour changes to slight golden.
While roasting rava, start to boil the remaining water and salt in a separate pan.
After the rava is roasted add cooked dhal, ghee and hot water to the rava mixture stirring continuously to avoid lumps.
Mix till it reaches upma like consistency.
Serve hot with Coconut chutney and Sambar.