Brown and crumble sausage in a large pan and remove using a slotted spoon. You can drain the grease off if you wish. Scrape all the browned bits with a wooden spoon from the pan, there is a lot of flavor on there! Place the cooked sausage into a very large mixing bowl. You can also use a deep metal roasting pan to mix and bake in. Spray the pan to help with easier cleanup.
Slice the French bread into 1" bread cubes. Dice the onion and celery using a good sharp knife. Chop the parsley, and keep in a small bowl.
In the same large sauté pan or large skillet pan, melt butter, ½ cup (1 stick). Add finely sliced onion, sea salt, and black pepper. Cook the onion for 5 minutes until translucent over medium heat, add the celery and, cook for 3 more minutes. Add the onion and celery mixture to the mixing bowl with any liquid to the sausage mixture.
Now add the rest of the ingredients into the bowl. Pour in the bag of cornbread dressing, French bread cubes (sourdough bread is great too!), dried cherries, dried cranberries, and chopped parsley. Now pour in the 3.5 cups of chicken stock or chicken broth. Using a large spoon, mix and stir the sausage stuffing until well combined.
Spray a large baking dish or in a roasting pan, the bottom of the pan, coat with a good cooking spray. This helps to release the stuffing, and washing up! Use a coconut oil, olive oil spray, or any non-stick brand you prefer.
Oven bake at 375 degrees f for 1 hour uncovered until golden brown, and serve hot.
Make Ahead Tips: Spray a prepared casserole dish, put the Italian dressing inside, and cover it with aluminum foil. Or put inside an airtight container, refridgerated up to one day ahead. Pull out about a half hour before baking it for your dinner, remove the foil and bake.
Variations and Additions: Some people love chopped mushrooms, apples, pecans, raisins, or walnuts in their stuffing, that is all up to you!