Take the moong dal in a vessel. Add turmeric powder and water and pressure cook till the dal becomes soft and mushy, Allow for 3-4 whistles. Mash the dal and set it aside
Wash the drumstick leaves thoroughly. Chop the drumstick leaves roughly and set it aside
Take the grinding ingredients in a mixer jar and grind it to a paste and set it aside
Heat a pan, add oil. When oil is hot, add mustard seeds and allow it to sputter. Add split urad dal and broken red chili and fry till the dal turns golden brown
Add finely chopped onions and saute the onions till they are translucent. Add chopped tomato and saute well.
Add salt and turmeric powder and cook the tomatoes till they are mushy. When the tomato is cooked, add the chopped drumstick leaves and mix well.
Add water and cover the pan with a lid and cook the leaves till it is soft. I cooked for about 10 minutes in medium flame occasionally stirring.
When the drumstick leaves are tender, add the mashed dal and mix well. Also, add the ground coconut-spice paste and mix everything well
Adjust the salt if needed. Also if the stew is very thick add little water and adjust the consistency. Cook for another 2 minutes and switch off the flame
Serve the healthy nutrition rich Drumstick Leaves Stew (Murungai Keerai Kootu) with rice!