Pretty good, but I think I'd prefer a potato instead of mozzarella.
Marinating the steak in a little soy and vinegar will help tenderize it a bit more and it's a great compliment to the fennel. Use on teaspoon soy, 1 teaspoon vinegar and marinate for 15 min. You won't even taste the soy, just nice, rich steak-y goodness. Cooked fennel is fantastic! i wouldn't even mention it's fennel before serving it. So many of the people I cook for are pleasantly surprised to find they love fennel. Definitely one summer ingredient we could see more of, raw or cooked. I'd probably serve the mozz or the mozz and fennel on another plate, since I'm not big on mixing dairy and beef. More great steaks at http://www.culinaryconnection.com/
Fennel was spectacular. Tried this on the stove and the steak should have been a little less cooked.