Yes my Dear Nina you could use spaghetti squash or zucchini, but for that I would suggest to use quinoa instead of rice.
Here is my ZUCCHINI BOAT RECIPE, but is more suitable for summer than winter. But maybe if you make it with gravy and skip the basil it will be okay for now also:
https://steemit.com/esteem/@lenasveganliving/spring-zucchini-boats