Rinse and soak the brown rice for 15-20 mins. Drain the water used for soaking the rice. Pressure cook 1 cup of rice with 2 cups of water for 3-4 whistles. Once rice is cool, fluff the rice using a fork.
Rinse the brinjal, cut the top / crown, slice lengthwise. Soak it in water until ready to cook.
Heat a heavy bottom pan, add oil, mustard seeds, chana dal, whole red chilies.
Once the mustard crackles, add the sliced brinjal pieces. (drain the water completely)
Add Turmeric powder, red chili powder and salt to taste. Mix well and let it cook for sometime.
Cook brinjal until soft. Next, add cooked brown rice, salt and rasam powder. Mix well until the rice coats brinjal and spices. Cover and cook on low heat for 5 mins.
Garnish with coriander and serve.