Pressure cook chana dal for 1-2 whistles or until cooked but still intact (dal should not turn mushy for a dry curry). Keep aside.
Heat 2tsp oil in a saute pan, add the seeds and once they start to splutter add the green chilies and cabbage. Cover and cook until cabbage is cooked through and tender, about 10-12 minutes.
Next add the cooked dal, grated coconut and salt. Cook for another minute and serve.