Preheat your oven to 375°F (190°C) and line a small loaf pan with parchment paper.
Finely dice the onion, celery, and mushrooms, then sauté them in a non-stick skillet over medium heat until softened and fragrant.
In a large mixing bowl, combine the ground turkey, cooked wild rice, sautéed vegetables, and the egg.
Add the tomato paste, coconut aminos, garlic powder, sea salt, black pepper, and dried thyme to the bowl.
Gently mix the ingredients by hand until just combined, being careful not to overwork the meat which can cause toughness.
Press the mixture firmly into the prepared loaf pan and smooth the top with a spatula.
Bake for 35 to 40 minutes, or until the internal temperature reaches 165°F.
Remove from the oven and let the meatloaf rest for 5 to 10 minutes before slicing to ensure it stays juicy.