Preheat the oven to 375F and prepare a 9x13 casserole dish.
To the casserole dish, add the dry pasta, meatballs, marinara sauce, nutritional yeast and broth. Stir until combined.
Add the broccoli and spinach, and stir again. Cover with foil or a casserole dish lid, and place in the oven for 40 minutes.
Remove the lid, and sprinkle with vegan cheese, as desired.
Bake uncovered for 10 minutes, until the cheese has melted and the whole thing is bubbling. Sprinkle on fresh parsley and serve immediately.
