In a large bowl, mix the first 4 ingredients (turkey through oregano). Form turkey mixture into patties.
In a large skillet over medium heat, heat oil. To the oil add the burgers and cook for 5 to 10 minutes on each side, until burgers are no longer pink in the center. Remove burgers from the skillet and set aside.
In the same skillet over medium heat, add the coconut aminos and the mushrooms. Cook 5 minutes, on each side, until tender.
In a medium bowl, mix the next 3 ingredients (avocado through lime juice) with sea salt and freshly ground black pepper to taste.
Layer mushroom, burger, guacamole, spinach and onion and serve.