Here in Kerala, though Malayalees use it in Sambhar and make a Thoran type curry only. So Egg Plant is not very popular here. But it can be an excellent curry or Subji for Chappathi/Roti anytime.
Fry some Brinjal cut in either thin round slices or strips/fingers in oil with a pinch of salt. If you marinate it with Cornflour, Chicken Masala or Chana Masala etc. it will be more tastier. Saute chopped onions, tomato, green chillis etc. for 15 minutes. Add some salt and a pinch of sugar. Mix the Brinjal and sautee for another 15 minutes. A mouth watering Baingan Masala is ready.