I did make this tonight, and it was wonderful. I took Tammie's suggestion and added some of the spinach and tomatoes to the cheese mixture. I also added about a tablespoon of minced sun-dried tomatoes. For the sauce, I used 1 cup of broth and 1/2 cup of white wine. I think my total amount of spinach was 6 cups, and I put in 5 tomatoes.
Anyway, we loved it, and I think this will be on my table at least twice a month.
7 lbs to May 1 mini-goal!