Heat oil in a pan over a medium heat, add cumin seeds once they start to pop, then add sliced garlic and cook for 30 seconds. Add the sliced onions and green chillies, cook for 6-7 minutes. Make sure to stir the onions.
Add ground turmeric, salt, and ground coriander, mix and cook for a minute. Next add frozen peas and cook for 2 minutes.
Once the peas are coated in the mixture add the coconut milk, lower heat and cover the pan with a lid and cook for 3-4 minutes. Just before switching off the heat add the coriander and stir into the peas.
Serve hot with roti, rice or with pitta bread. Cut the pitta breads in half to make pockets and fill with the sabzi.