Heat oil in a kadai. Add the mustard seeds, urad dal and channa dal. Fry it till it becomes slight brown color and add all the chopped veggies: onion, ginger and green chillies. Saute and add carrot and curry leaves. Saute well for few minutes.
Pour water, grated coconut and salt as required.
Allow it to boil, then reduce the flame to simmer (lowest heat setting). Quickly add the roasted rava while constantly stirring. Add chopped coriander leaves.
Close the pan with a tight lid. Keep the stove in simmer for around 5 to 6 minutes till all the water is absorbed and the rava is cooked.