Cook the pasta according to the package directions.
Reserve ½ cup of the pasta cooking water for later and drain the pasta.
Melt butter in a skillet over medium heat. If using garlic, cook the garlic with the butter until fragrant.
Once the butter is melted, add pasta and toss it gently to coat with butter.
Add ¼ cup of the pasta water at a time and parmesan cheese. Season to taste with salt.
If you want pasta with more sauce, then add more pasta water.
Toss the pasta gently to coat it with the parmesan cheese and serve warm.
Garnish it with some extra parmesan before serving and a bit of freshly ground black pepper.
