Add olive oil into a large nonstick pan over medium heat. Once hot, add onions and garlic to the pan and sauté for 2-3 minutes or until fragrant, add mushrooms and cook for another 3-4 minutes. Add nutritional yeast and stir.
Add broth, coconut milk, apple cider vinegar, Worcestershire sauce, tamari and ground pepper.
Stir and add uncooked pasta. Cover pot and increase the heat to medium-high so the liquid is bubbling. Let cook for about 10-12 minutes, or until the liquid is creamy and pasta is cooked.
Serve immediately, garnished with fresh parsley and extra sea salt and pepper to taste.