Flatten out the bread slices using a rolling pin

Spread a teaspoon of tomato sauce on each slice

Mix all the vegetables and divide into 4 portions.

Place a portion of cheese on the bread slice, a portion of the vegetables and top with more cheese. Fold and seal the edges. I used a fork to press it down.

Toast on a griddle. Brushing with butter is optional. I did not use butter / oil

Once both the sides are toasted, remove from griddle and serve with tomato / chili sauce.