I got this recipe from a friend about thirty years ago. It has become a family favorite. It makes a lot, so it's great to serve to a crowd. Also, it can be made ahead and re-heated very easy. The original recipe calls for regular pork Italian sausage, but to cut down on fat, I use the turkey kind.
If you use regular pork sausage, you need to brown a little first to remove some of the fat. Also, the sauce can be cooked on top of the stove. But it burns easy, so you have to keep a close eye on it. It only takes 1 hour on the stove.