Mix carrots and salt in a bowl. Add mayonnaise and mix well.
Mix cottage cheese and salt in another bowl and mash well. Add green chutney and mix.
Take 3 bread slices for each sandwich. On one slice spread carrot filling, cover it with second slice and spread cottage cheese-green chutney mixture on it. Top it up with third bread slice.
Press gently. Trim the sides of each sandwich and cut it into two pieces and serve