Heat oil in a pan, add jeera and sauté for a few seconds.
Add minced garlic & ginger and cook them until they are golden brown.
Once garlic & ginger are done, add chopped onions and cook until the onions are translucent.
Add chopped tomatoes and let them cook until soft.
Add salt as per taste, turmeric powder, coriander powder and mix together.
Once the spices are mixed nicely, add Pav Bhaji masala, mix again and cook for a few minutes.
Blend the mixture in a blender to make a creamy paste.
In a pressure cooker, add water, vegetables, salt and pressure cook for 4-5 minutes.
Once the vegetables are soft, add in the blended paste and mix together.
Mash the vegetables nicely using a masher. You can keep the consistency anyway you like it.
Cook for another 4-5 minutes and the bhaji is ready.
Toast the pavs in butter and serve the Pav Bhaji with lemon wedges and onions.