Blend tofu with non-dairy milk, nutmeg, garlic, onion and a light dash of cayenne pepper (optional, or alternatively, add a drop or two of hot sauce) until smooth and creamy.
Transfer mixture to a saucepan and whisk in nutritional yeast, flour and 1 tbsp vegan parmesan. Cook over medium heat and allow to thicken. Taste, addong salt and black pepper to taste and adjusting other seasonings (more Parmesan, more garlic, etc) as desired. Toss with 2-3 cups of cooked whole wheat or brown rice pasta and vegetables if using.