Meat, even with mushroom sauce. This is a great application for masterpiece dish. In the recipe specifies dried mushrooms (for more flavor), if not, take a fresh, 300-400 grams. This recipe deserves to cook it at least once in order to try to eat as it is unrealistic. Mushrooms do not get cut into pieces, and twisted in a meat grinder. If fresh mushrooms, as an option, you can coarsely grate. Pork can replace chicken breasts, but with pork tastier.
This sauce tastes just gush — cheese, mushroom, and even a couple of spoons of wine present. If not Sherry suit any white fortified. Well, or at all without it, although undesirable. Trifle and its contribution to making a bouquet. Better if you find processed cheese soup, it quickly dissolves and never collapses. In general, you can take any cheese.