If you're of the mind that a grilled cheese sandwich does not qualify as a suitable dinner, we have two things to say. First, why in the world not? Second, we have a compromise and it's called a croque madame.
What we like about grilled cheese sandwiches -- besides all the melted cheese -- is that it makes for a quick and stress-free dinner option. But we understand that it doesn't have a ton of nutritional value. The croque madame, on the other hand, has more to offer.