1: Using a mortar & pestle or a mixer, make a coarse paste out of the chilli, ginger and garlic.
2: Heat butter in a pan and add the cumin seeds. Add the onion and the prepared paste. Saute until the onion turns translucent.
3: Add the capsicum and saute for 1 minute.
4: Add the tomato, salt, red chilli powder and Pav bhaji masala. Saute for 2 minutes.
5: Add water and mix well. Cover and simmer for 10 minutes, stirring occasionally.
6: Mash lightly if the mixture is very lumpy. Reduce it until it turns thick.
7: Remove the mixture into a bowl.
8: Cut a pav in half almost all the way through, but not completely.
9: In the same pan, melt butter and toast the pav lightly. Spoon the prepared masala onto the Pav.
10: Serve garnished with onion, coriander and lemon wedges.