Put firm tofu in a cheese cloth and squeeze all of the excess water you can out of it; this will give it a much better texture in the cream cheese. It should basically be completely smooshed when you're done and difficult to get additional water out.
In the food processor, combine the drained tofu, apple cider vinegar, salt and nutritional yeast. Let it run for awhile until it is very creamy.
Track this on My Fitness Pal searching:PDV High Protein Vegan Cream CheeseYou could mix in other flavors to this for different flavors - like your favorite fruits (strawberries, blueberries, etc.), everything bagel seasoning or green onions!