Roast the roasted gram over low heat for 5 minutes. Let it cool completely, then grind it into a coarse powder and keep it aside.
Prepare the vegetable mixture. In a mixing bowl, combine the sliced onions, sliced capsicum, ground roasted gram, red chilli powder, garam masala, salt, and 2 tablespoons of oil. Mix well and keep aside.
Heat the remaining oil in a pan. Add the chopped garlic and sauté until lightly golden. Add the cumin seeds and let them splutter.
Add the prepared capsicum mixture and sauté for about 5 minutes until the onions soften slightly.
Add the gram flour and cook for 2 minutes to remove the raw smell.
Beat the curd until smooth and add it to the pan. Mix well, then pour in ½ cup of water or adjust the quantity to your preferred gravy consistency.
Cover and cook on low flame for 2–3 minutes until the capsicum is cooked and the gravy turns creamy.
Turn off the stove. Garnish with chopped coriander leaves and serve hot with chapati, roti, dosa, appam, pulao, biryani, or steamed rice.