Stuffed Chicken with Rosemary Polenta

I ran across this recipe in the current issue of Sunset magazine while waiting in line at the grocery store today. I think I have nearly everything I need to make it except the cheese and fresh spinach. LOL Honey tells me that Gouda is a perfectly acceptable substitute for Val d'Aosta fontina. Of course he also instructed me to make it with peppers instead of spinach. Ha!