Spinach Gratin

I made this Spinach Gratin.  It was delicious, so delicious that I ate the entire dish in one evening, aside from the few spoonfuls that I gave Noah (Jeremy isn't as much as a spinach lover as I am).  The few changes that I made were to cut the butter in half, use fat-free half and half instead of the cream or stock (although I think I'll try stock next time), used whole wheat breadcrumbs, and used a combination of part-skim mozzarella and parmesan cheese (because that is what I had on hand).  I think a few cloves of sauteed garlic would also be a great addition.