1Cook the pasta according to the package instructions until al dente. Drain and set aside.
In a large bowl, combine the drained tuna, cooked pasta, shredded cheese, ranch dressing, and chopped parsley.
Mix all the ingredients together until well combined and the cheese is evenly distributed.
Transfer the mixture to a serving dish and garnish with additional parsley if desired.
Serve immediately while warm, or refrigerate and serve cold as a pasta salad.