Now, normally, I would slowly whisk in Olive oil into this dressing, but I am sort of notorious for always forgetting a main ingredient and I discovered that this is rich and thick enough that you don't actually need it if you want to cut back on some fat. But, olive oil never killed anyone if you want to go for full indulgence!
You can top this with a little more parmesan, and some home made garlic croutons.