I've been making my own Alfredo sauce, this one is my favorite version. It reminds me of Olive Garden Alfredo. Their sauce is very good, often people order some on the side for bread dipping or even take it to go. At first I couldn't believe that making almost identical flavor was that easy; literally doesn't take longer than five minutes to put it together (plus the cooking time). It's one of those fatty meals that you can only have once in a while, though.
My hubby and I like garlic, mushrooms and chicken in our Alfredo - so that's how I make it; but these things are completely optional.