I had to give this a try this afternoon, planning on the also-featured homemade mac & cheese. With appropriate planning (i.e., making the sauce ahead), it really is quick and easy. The instructions for the sauce are easy to follow and prep was simply chopping an onion in my food processor. It takes about 5 minutes in the kitchen, then occasional stirring until the sauce is cooked.
I used my Blendtec (larger, WildSide jar) - worked like a charm to puree the whole batch. (As a side, I kept the amount of sauce needed for the mac and cheese recipe in the blender, simply added the cheese and spices and it was ready to pour on the pasta.)
The sauce tasted good - creamy, mild - on its own and was very good jazzed up with the cheese. I'm excited to make a "cream" soup with the rest of the sauce batch.