Steps
1. Heat the oil in a pan over medium heat.
2. Add the mustard seeds and let them splutter.
3. Add the chopped onions and sauté until they turn translucent.
4. Stir in the green chili and chopped tomatoes, cooking until the tomatoes soften.
5. Season with salt, chili powder, garam masala, and coriander powder. Mix well.
6. Cook for an additional 2-3 minutes until the spices are fragrant.
7. Finally, stir in the roasted groundnuts and cook for another minute.
8. Serve hot with rice or bread.