Heat oil in a large wok or frying pan over medium high heat. Add minced ginger and garlic. Saute, stirring, for 1 minute or until aromatic.
Add onion, and sauté, stirring, for 2-3 minutes or until softened and translucent.
Add tomatoes, and sauté again for another 1-2 minutes or until they become soft.
Stir in tomato paste and tomato sauce (ketchup). Add ground turmeric, red chili powder, pav bhaji masala and salt. Saute, stirring, for 1 minute or until aromatic.
Stir in green bell pepper (capsicum) and green chilies (if using). Saute again, stirring occasionally, for 2-3 minutes or until tender.
Stir in cooked basmati rice and chopped coriander leaves. Stir fry for 1-2 minutes.
Add frozen green peas and cook again until heated through. Garnish with more coriander leaves and serve warm.