How to make a healthy  Sandwich?

A healthy sandwich is one of the options which one can go for as a healthy snack. Preparing  healthy sandwiches  takes very less time and can offer good nutrition and also
be satisfying.
The video below demonstrates the preperation of a vegetarian sandwich using browen bread/whole wheat bread, onion , tomatoes, green pepper and cottage cheese(see how to prepare cottage cheese video).
This is a low calorie healthy sandwich which can be prepared in less than 10 minutes.