Dry roast moong dal till golden brown.Pressure cook both the dals with 1 cup of water,salt and turmeric powder, Cook until mushy and soft. Mash it well with a laddle and set aside.
To a mixer jar : add coconut,jeera and little water grind it to semi fine paste.Set aside.Cooked dal is ready.
Clean the greens.Pluck the drumstick leaves from stem, rinse it well drain water and keep aside.
In a kadai heat oil - add green chillies, then tomato saute till it turns mushy.
Add turmeric powder and sambar powder.Saute and cook for a minute.Then add water.
Add required salt.Cook covered till the greens is cooked and turns soft.
Now the color is changed and there is no water too,add cooked dal.
Mix well.Add coconut paste and cook for few mins in low flame.
Meanwhile you can do the tempering.Heat oil in a tadka pan - add mustard seeds and urad dal let it splutter.Add chopped onion saute till golden.
Add the tempering and mix well.Switch off.
Serve hot with a drizzle of ghee with rice, heaven!