Cook the white rice and spread it in a wide container to cool.
In a large non-stick pan, heat 3 tbsp vegetable oil and fry the mustard seeds and dried chilies. The mustard seeds will pop! Give them a second before adding the chilies. About 30 seconds or until the mustard seeds are browned.
Add the diced onion and fry until brown. Add in the tomatoes, 1 tsp of salt, and turmeric next.
Once the tomatoes have started to bubble, reduce the heat to about medium. We're looking to slowly stew the tomatoes without letting them dry out. Keep them on the heat for about 25-30 minutes, until the tomatoes have turned almost into a sauce-like texture.
Once the consistency is nice and mushy, remove from heat and add to the spread-out rice. Mix well being sure that the rice is coated thoroughly.
Finally, in a small non-stick pan, heat up the remaining 3 tbsp of vegetable oil. When the oil is almost smoking, add in the split dried chickpeas and urad dal and toast in the oil. Be careful! They toast quickly! The second you see them brown, remove them from heat and pour over the tomato rice.
Mix this in well and serve immediately!