We made butternut squash ravioli for a dinner party here a couple of weeks ago and my husband made a mushroom sauce with olive oil, portabella and crimini mushrooms, a little garlic and a splash of port. He also toasted some pine nuts with cinnamon which tied all the flavors together in an interesting way. This may be more flavor than you are looking for though we didn't slather with the sauce, just put on a little and everyone loved it.