
Warm a large skillet over a medium-high heat. Add 1 tablespoon of cooking oil. When the oil is simmering, add the turkey, Italian spice blend and black pepper. Break the turkey apart and cook for about 5 minutes or until almost no pink remains.
Add the onion, carrot, celery and garlic to the pan. Cook another 5 minutes or so until the meat is fully browned and the veggie have softened. Add vinegar (and soy sauce/tamari if using) and cook an additional 1 minute.
Stir in the penne followed by the tomatoes and stock. Use the back of a spoon to smooth the turkey mixture down into an even layer so that the pasta is almost entirely covered in liquid.
Reduce to a medium or medium-low heat until you reach a gentle simmer. Cover with a fitted lit and cook for about 7-8 minutes.
Remove the lid and stir in the nutritional yeast (or parmesan). Turn off the heat, add the spinach to the pan and cover with the lid once more for a minute or so to wilt the spinach. Once wilted, mix the spinach in fully. Taste and season with salt as you see fit then serve.
Let cool and store leftovers in an airtight container up to 5 days.