I also added sumac and garlic to the cooked carrots and added fresh flat leaf parsley from the garden to the mixture. (bbcgoodfood.com)
3 cups prepared stuffing mix 1 cup apple cider 2 tablespoons unsalted butter 3/4 cup chopped celery (about 2 ribs) 1/2 cup chopped yellow onion (1 small onion) 1 tart apple (Granny Smith), cored and finely chopped 1 jalapeño chile, seeded and finely minced 1/2 teaspoon dried thyme 1/2 teaspoon dried crushed rosemary 1 tablespoon minced fresh flat leaf parsley 1/2 teaspoon coarse kosher salt 1 teaspoon cracked black pepper (fieryfoodscentral.com)
I always use a lot of garlic in mine, sometimes nutmeg, and often fresh flat leaf parsley, although I think I will try your idea with the onion now you have mentioned it, it sounds heavenly! (kaveyeats.com)