Dry roast peanuts and sesame seeds separately till the nutty aroma wafts out. You can use small seasoning pan for this purpose.
Next transfer the roasted ingredients to the mixer and get them coarsely powdered. Also soak the tamarind in half cup of water for about 10 mins.
Next step is to grind the coconut, coriander leaves, cumin and green chillies together to fine puree including water as needed. Take this puree in a wide bowl along with powdered peanut plus sesame, salt, onion, turmeric powder, tamarind water, jaggery and sambar powder. Combine everything together. Stuffing mixture is ready.
Wash the brinjals well with enough water and pat dry them using kitchen towel. Using sharp knife slit the brinjals lengthwise keeping it's stem intact as shown below.
Now carefully fill the stuffing masala in to slit brinjals and keep them ready.
Next heat a pan adding oil, mustard seeds and crushed garlic. When mustard seeds sizzle, add all the stuffed brinjals and let it cook for 2 to 3 minutes. Pour the remaining stuffing mixture and a cup of water. Cover it with lid and cook in simmer until brinjals are soft. Stir and flip in between for even cooking.
Very very delicious stuffed brinjal is ready to serve with chapati or jolada rotti.