I made this with shells, using only 2/3 of 12 oz. box, and still just lightly stuffed. I also added spinach to the sauce. My DH really liked it. I was less enthusiastic, feeling the proportions were off for my taste. I will remake it - it's really nice with our small Maine shrimp - but think I will increase the ratio of seafood stuffing to sauce by a lot and more fully fill the shells. I should note that I am not so big on heavy cream sauces, so my rating cetainly reflects personal taste. With a little tweak, I think I'll love it.