Bring a large pot of salted water to a boil. Add the egg noodles, reduce the heat to a low boil, and cook the pasta al dente according to the package directions.
Before draining the pasta, reserve ¼ cup of pasta water. Drain the pasta well, but do not rinse.
Place the pot back on the stove over medium heat and melt the butter and garlic powder.
Stir the cooked noodles, parsley, parmesan cheese if using, and pepper. Toss to coat and season with additional salt if desired. Stir in a tablespoon or two of pasta water can be added to reach desired consistency.
