<<Disclaimer: Verify this information before applying it to your situation.>> The vegetable is probably Spaghetti Squash. It is very good (& GF) when boiled and served with a little butter or margerine. It doesn't make a good substitute for spaghetti as it is not a starch. Like Eggplant Parmesan, it could be made with tomato sauce to make a new kind of dish. Enjoy! Tom