This is the kind of dish that I like to serve at dinner parties simply because it can be prepared well in advance and then popped into the oven before your guests arrive.
Gourmet meal that's on your table in 30 minutes. The result was this dish and it's superb. If you don't have fresh thyme, I'd suggest using 1/2 tsp dried in it's place. And if you cannot find Asiago cheese, Romano or Parmesan is a decent substitute.