Take potatoes, cauliflower, carrots, peas, beans, and capsicum in a large pot. Add little water and bring it to boil
Cover and cook until all the vegetables are completely done
In a frying pan or kadhai, heat 4 tbsp butter. Add onions and fry until they are golden
Add tomatoes, tomato puree, pav bhaji masala powder, and salt
Let it cook until the tomatoes are completely done
Mash the boiled vegetables well
Add the mashed vegetables to the masala gravy. Mix well
Add little water to adjust consistency. Simmer for 15 minutes
Top with 1 tbsp butter and mix well