This is a very simple idea that is very popular in the United States. It is often served with chowder and unfortunately not always well done. Too often it consists of a scooped out roll with soup poured into it and then served to the guest. More often than not the bread is cold. These are the reasons I would never order this in a restaurant.
At home however, it is a different story. Here I cut out all excess bread from the bowl. I then toasted it in the oven until it was crisp. Then I rubbed the interior of the bowl with a clove of garlic and finally added the soup and cheese. This was served with a small romaine salad with red wine and garlic vinaigrette and some anchovies. Delish.
You can do this with most soups but they must be thick and hardy ( like me ) or they will quickly soak and collapse the bread.
take as much of the inside of the bread out as you can without making it too bare. Too much bread inside gets soggy.
All of this can be prepared in advance, kept warm and then assembled at the last minute.
So ladies: when your man comes in from work tired and grumpy. Make him happy, give him soup in a bread bowl.