Preheat oven to 375 degrees F, spray 9x9 (or other medium sized) baking dish with cooking spray, and set aside.
Cook quinoa according to package instructions, minus 4 minutes. It will finish cooking in the oven. Drain any remaining water and place in a large bowl.
Heat a medium skillet over medium heat, and spray with cooking spray. Add the turkey and cook for 5 minutes, breaking up with a spatula as it cooks. Drain any liquid, if any, and add to the bowl with the quinoa.
Return skillet to medium heat and spray again with cooking spray. Add the garlic and cook for about 30 seconds, then add the spinach and sauté, stirring until it's wilted. Add to the bowl with the quinoa and turkey.
Now stir in the tomato sauce, bread crumbs, 1 cup of cheese, thyme, basil, salt and pepper, to taste. Stir until mixed well.
Scoop the mixture into the prepared baking dish, top with remaining cheese and bake for 25 minutes. Cheese will be nice and melty.
Serve topped with chopped green onions and tomatoes, if desired. Sour cream or plain Greek yogurt also make a nice addition!