Heat oil and add the cumin seeds and the bay leaves.
When the seeds begin to splutter, add the onion paste and saute till fat separates.
Add the tomatoes or puree, turmeric, salt, garam masala, red pepper and the coriander powder, and stir-fry till fat separates.
Add the peas, potatoes and the green chillies and saute over high heat till the vegetables look glossy.
Add 2 cups of water, bring to a boil and simmer, for 10-15 minutes.
Serve hot, garnished with the coriander leaves.