tomato-substitute for sausage and spaghetti squash? [closed]

I just got diagnosed with an autoimmune disorder and have to avoid both grains and tomatoes. I was wondering if there is a way to substitute tomatoes to create a nice sauce that would go well with sausages and spaghetti squash?

If a non-tomato sauce isn't feasible, how does one make the dish not dry without a sauce? I can have (cooked) alcohol-based sauces. Is there a particular alcoholic drink that could be a good base for a sauce for sweet pork sausage and spaghetti squash?