Break all eggs in the bowl, whisk them nicely and keep aside.
Heat Oil and butter in a pan and add chopped onion and green chillis.
Saute those for 2-3 minutes and add chopped capsicum/bell peppers.
Cook till veggies become soft and add tomatoes.
Cook for 2-3 minutes on medium heat till tomatoes are mashed and pulpy.
Add red chilli powder, turmeric powder, pav bhaji masala and mix well.
Pour egg mixture in the skillet and cook eggs, keep stirring them in-between so that they do not stick to pan and cook till they are almost done to 95%.
Cut pav bun from the middle and toast both the parts in a skillet or tava. Likewise toast all pav buns.
Serve the egg burji with toasted and buttered pav and garnish with coriander leaves and some more green chilli.