Heat ghee in a pressure cooker.
Once the ghee is hot, add cumin seeds and let them crackle for a few seconds.
Add coriander powder, turmeric powder and red chilli powder and fry for a few seconds.
Add green chilli and tomato and cook for a minute.
Add little water if the masala is too dry.
Now add lauki, salt and a cup of water and pressure cook till lauki is done.
Remove the pressure cooker from heat and let the pressure release.
Remove the lid of the pressure cooker. Garnish with fresh coriander. Serve hot with paratha.