Step 1Heat oil in a pan and put butter in it and let it melt. Add onion to it and cook till it becomes transparent.
Step 2Now, add capsicum, after cooking both the things for a few seconds, add paneer to it and now add black pepper, chili flakes and oregano to it and mix.
Step 3Add tandoori mayonnaise to it and mix everything well.
Step 4Take a bread slice and spread mayonnaise on both the slices, now spread the prepared filling on one bread slice and cover it with another bread slice.
Step 5Grill the sandwich in a griller. Cut the sandwich in two and enjoy with chutney.