I know it sounds odd but this Alfredo sauce is made with pureed cashews instead of any butter or cream, so it still does have fat, but it is much less and it is the GOOD kind of fat instead of the artery-clogging kind. And you can make it completely vegan as i did. I first heard about doing this from my sister Mirien who also posts on this blog but she hasn't posted it yet so i figured I would. It's a really easy recipe also-- it takes just as long as the pasta takes to cook.
1/2 cup raw cashews (I get them here in cashew pieces for $3.65 a pound)
1 1/2 cups boiling water (I add extra water to the pasta and take it out once the pasta has cooked about 3 minutes)
1/2 teaspoon fresh lemon juice (i left this out because i didn't have it)
1-2 garlic cloves (or more, depends on your taste)
1 tablespoon olive oil
salt & pepper (it definitely needs some salt, i didn't put enough in and added it at the table)
1/2 teaspoon nutmeg
Blend the nuts alone and just get them to smaller pieces, then add the pasta water and blend it for about 2 minutes, or until it looks like there aren't any pieces. Then add everything else and blend it again for a minute or two. If its not as thick as you'd like then put it in a little saucepan and heat it again and it will thicken.
That's all there is to it. I've seen variations that call for a 1/4 cup of Parmesan cheese or mozzarella or 2 Tbsp. nutritional yeast. I wanted to keep it vegan, and didn't have any nutritional yeast so i just stuck with what's above and my wife and I both really like it. It could be easily doubled but i wouldn't recommend doing more than that unless you have a huge blender or are doing multiple batches. The recipe listed makes enough for about 4 people. I have even mixed it with a canned spaghetti sauce and it makes a very quick and tasty pink sauce.
The picture isn't the best, but it tasted great. I made it with spaghetti noodles and sprinkled parsley on top. I have also mixed steamed broccoli into the sauce at the end and served it over pasta. Every way I've tried it, it's been great.