Using a Food Processor, chop carrot, beans, cabbage and capsicum finely.
Add Mayonaise, Black pepper powder and salt to the finely cut vegetables. It's better to add salt and black pepper powder after you have checked the taste, since children like it less spicy.
Lastly add the chopped corriander leaves.
Now apply this mixture in between the bread slices and toast it.
You can use butter on the top of the bread while toasting since it gives a nice flavour to the Sandwhich.