I discovered a recipe in Joy of Cooking and tweaked it a bit. I'm not sure it's worth the trouble of stuffing the squash. Personally, I'd just peel and dice the squash while it's raw, then roast the squash while sauteeing the rest of the filling, then toss the whole mess in a baking dish and be done with it. But, if you're into fancy presentation, go for it. :) No matter what, it tastes great, and it's nutritious.