Cook the pasta according to package directions. Drain and set aside reserving about 1/2 cup of the pasta cooking water.
Add the oil and garlic to a dutch oven or large saucepan over medium heat. Cook garlic while stirring until it becomes fragrant, about 15 seconds. Stir in the parsley and cook while stirring for 1 minute.
Add the cooked pasta, Parmesan, 1/4 tsp salt, and 1/4 tsp freshly ground pepper to the the saucepan. Stir and cook for 1 minute, adding the reserved pasta water a little at a time until it reaches your desired consistency. Season with salt and pepper to taste.