1. Rub a little oil over the baingan and roast over a gas flame until the skin gets charred and starts to peel off and the flesh is soft.
2. Remove the charred skin of baingan. Wash and mash the flesh with a fork. Mix all ingredients, including 1 tsp oil, with the baingans in a large, but shallow oven proof dish.
3. Preheat oven at 200C. Bake bharta for 40 minutes, stirring in between. Serve.