Mix flour with salt and add water and prepare dough. Usually its little less than half cup for 1 cup flour.
Prepare dough and let it rest for 15 mins. After 15 mins, knead again to make it smooth and divide into 6 or 8 equal sized balls depending how big you want it.
Roll it as you do for chapati, but make sure not too thin. You can roll slightly thicker.
Spread the nutella in half the chapati and fold it leaving a little space as shown in the picture.
Press it with your fingers to seal it.
Now fold it decoratively with the left extra space. By practise this will come our pretty well. I will try to upload video to show how to fold it later.
Heat tawa and toast both sides with few drops of oil or ghee as required.
Press gently in the folded area to ensure even cooking.