Sauce for sweet potato gnocchi?

Hi guys,

I made a big batch of sweet potato gnocchi this weekend, and after the initial victory dinner, froze the remaining uncooked gnocchi for later use.

Here's the twist: I'm kind of tired of the standard butter-based sauces everyone seems to use. I also don't like to add sweetness to sweet potatoes, which rules out all the maple syrup, etc, branch of sauces. Plus I'm vegetarian (though not vegan).

So, with allllllll that in mind, what would you recommend, sauce-wise?