Firstly, wash mutton keema and strain out the excess water from the keema with a strainer.
Take a pressure cooker or a cooking vessel.
Into it, add oil and heat it.
Add sliced onions, green chillies and saute until the onions turn very slight brown colour.
Add ginger garlic paste and saute to get rid of raw smell.
Add mutton keema into it and roast well.
Roast it until the keema changes it's colour

Add salt, turmeric powder, red chilli powder, mix it and roast it for few minutes and cook until oil appears at the sides.
Add chopped tomatoes, garam masala powder, black pepper powder, mix and cook until the tomatoes turn soft.
Add about one and a half cups of water, mix it well.
Pressure cook the keema for 3 whistles on sim flame or cook them until it gets tender.
Reduce the steam.
Add fresh coriander leaves, crushed kasoori methi and mix.
Cook for few minutes