Dry roast moong dal till nice aroma rises and it is golden brown,Set aside.Heat oil in a kadai - add the ingredients listed under 'to temper' let it splutter then add onion, garlic, green chillies and curry leaves and saute till golden brown.
Then add tomatoes and saute till mushy and raw smell leaves. Then add the veggies, saute for 3 mins. Transfer this to a pan and add 1 cup of water and allow it to boil till the veggies are cooked till soft.
Pressure cook moong dal in medium flame with 1 cup of water for 4-5 whistles till soft, smash it well with a laddle. Add this mixture to the boiled veggies.Simmer and cook for 5mins until dal combines well with the veggies.Add required salt.
Add coconut milk and give a rolling single boil, sprinkle pepper powder then garnish with coriander leaves and switch it off.
Serve hot with rice or with bread as per your choice!