Heat oil in kadhai.add onions and ginger garlic paste.saute till light golden in colour.now add green chilli and cook for few seconds.then add tomatoes puree and mix it.cook till oil separate from sides.Add dry spices mix it.cook it for few minutes add Paneer pieces and mix properly. cook till spices coat Paneer well.now add coriander leaves and Serve hot with tandoori roti.