Very easy and good dish which we enjoyed but I thought the broth needed something to kick it up a notch -- maybe basil/oregano/garlic. The meatballs are very good and this is a great low cal/low fat meal. I used the spinach option, adding it at the 4 hour mark (with the meatballs) and I think it would be better to add it at the very end.
I agree with ellie_ the broth need flavor.
I didn't have the problem, because the chicken broth base I purchased already contains herbs, but I think everybody has to use what he likes. I the base is not %u201Cstrong%u201D enough one easy way would be to add little white wine and 1 teaspoon tomato concentrate (so is my mother always doing).
I did not have escarole at home but leek, and this was perfect with the soup.
I have to confess that I forgot to prepare this early in the morning. I had only 40 minutes for cooking, but this was o.k.!
My family enjoied it very much. Light meal... after Christmas time...