Sauté the onion, carrot, and celery in the friendly fat with the sea salt, pepper, and all purpose season for about 7-10 minutes.
Add the garlic and cook for a minute.
Put the cooked/seasoned veggies in a large mixing bowl along with the rest of the ingredients, and combine.
Pour the casserole mixture into a 9x13, buttered baking dish. At this point you can either bake it off, or cover it up and put it in the fridge to bake later or bring to a friend in need.
Bake, uncovered, at 375 degrees for 1 hour.