boil dal till it is cooked well
.In a sauce-pan, heat 2 tsp oil and add red chilli to it the mustard seeds,and the cumin seeds. hingWhen the mustard seeds begin to splutter add garlic onion and the curry leaves, tomatoes and green chilly.
add cucumberCover and let it cook well till the tomatoes and cucumber are soft . Add the cooked dal and mix well. add butterRemove from fire and garnish with chopped fresh coriander leaves.