Heat oil in a pan over medium heat.
Add cumin seeds and let them splutter.
Stir in the chopped onions and sauté until golden brown.
Add ginger-garlic paste and green chilies; cook for 2 minutes.
Pour in the pureed tomatoes and cook until oil separates.
Add coriander powder, cumin powder, and salt; mix well.
Add the cooked chickpeas and stir to coat them in the spices.
Pour in a cup of water and bring to a boil.
Reduce heat and let it simmer for 15-20 minutes.
Stir in garam masala and garnish with fresh coriander before serving.