To a mixing bowl, add plain Fage Greek Yogurt.
To this add salt, minced green chillies, red pepper flakes, and ginger paste.
Then add finely chopped veggies like bell pepper, onions, and grated carrots.
Add grated paneer.
Then add the parsley, and hemp hearts.
Give it a mix. Keep it aside for now.
Heat oil in a pan. Temper mustard seeds and once they crackle, add roughly torn curry leaves to it.
Fry for 10 seconds. Pour this tempering over the yogurt mixture.
Mix well. Taste and add salt if needed. The sandwich stuffing is now ready.
Arrange 2 slices over a tray and spread this yogurt mixture over each slice generously.
Top it with some lettuce leaves.
Close it like a sandwich using another bread slice and toast it in a pan using butter. You can even grill it in a Panini Maker or toast the bread in a regular toaster first and then make the sandwich. If you like a cold sandwich, consume without toasting.
Cut in any desired shape and serve. Serve this sandwich with some ketchup or chutney.