Melt the butter in a large frypan. Add the sausage and, as it cooks, keep breaking it up with a large spoon. After the meat is no longer pink, gradually stir in the bread crumbs. If it seems too moist, add a little more breadcrumbs. Stir in the pignolis. After it cools a little, loosely stuff the turkey.
If you prefer to make it in a crockpot, I add some of the stock from the pot simmering with the neck , liver and gizzards or you could use chicken or turkey broth. This liquid is just to replace the juices that would seep into the stuffing from the turkey.