This is an indulgently creamy four cheese sauce that's perfect with gnocchi or penne.
If you can't find Provolone, a cheese from southern Italy, use any semi-hard cheese you prefer - Cheddar would do just fine.
Parmesan cheese is not truly vegetarian, as it contains animal rennet. To make this dish 100% vegetarian, omit the cheese or find a suitable vegetarian substitute made without animal rennet. In supermarkets look for the 'parmesan style hard cheeses' which are suitable for vegetarians.
Used different ingredients. This was an excellent sauce! The 4 cheeses really complement each other nicely. I added some oregano, tarragon, parsley, garlic and black pepper for some extra flavour. It is definitely worth the try to make, and it was easy too! - 21 Jul 2008
Very rich, but very, very nice. A true luxury cheese sauce when made with the best available cheeses. This will probably be a major contributor to my inevitable heart attack, and that's a good thing. - 14 Jan 2013
I made this dish for a few friends and they all loved it! Also, it was easy to make coming from a beginner cook! - 21 Jul 2008