Blanch the spinach leaves in hot water. When they get soft remove them out and run them under cold water. This prevents further cooking and hence the leaves remain green. Squeeze out excess water and finely mince.

Heat olive oil, add in the onion and garlic. Sauté till it is soft. Now add the green chillies and mix.

Now add in the corn and spinach. Mix it up and season it with salt and pepper.

Remove into a separate bowl and add grated cheese to it while still hot.

Butter the bread slices and apply a thick layer of this stuffing mix.

Cover with another slice of bread and grill till golden brown.