Chop the cabbage, capsicum, and carrot. You can chop them coarsely or finely.
Slightly boil the fresh corn kernels.
Finely chop or use a chopper to mince all the prepared vegetables.
If there is excess water in the chopped vegetables, you can squeeze it out using a cotton cloth. You can even use this water to knead the dough.
In a bowl, combine the chopped vegetables, kasuri methi, chilli flakes, oregano (optional), crushed green chilli-garlic-ginger, grated cheese, chopped coriander leaves, salt, and butter.
Mix all the ingredients well. Use the filling immediately and do not let it sit for too long, as it might release water.