One of my favorite things to make, and very quick. I use Dreamfield's pasta as it only has 5g net carbs and tastes just like normal pasta. It has 190 calories per 3/4 cup serving, since it's not in the database the nutritional information the site comes up with will be wrong, but should be easy to figure out. For the butter I use Smart Balance light. You can use whatever reduced fat cheese you like, keep in mind that different brands have different fat contents for their reduced fat cheeses. Makes one serving, just multiply ingredients for more. Enjoy!