Cook the Pasta:
Bring a large pot of salted water to a boil. Add the noodles and cook according to the package instructions until al dente.
Drain:
Drain the cooked noodles in a colander, reserving about ½ cup of the pasta cooking water.
Butter the Noodles:
Return the noodles to the pot while still warm. Add the butter, stirring until it melts and coats the noodles evenly.
Season:
Mix in the garlic powder (if using), salt, and pepper. Add a splash of reserved pasta water if needed to help the butter coat the noodles smoothly.
Optional Add-Ins:
Stir in the Parmesan cheese for a richer flavor.
Serve:
Transfer the buttered noodles to a serving bowl, garnish with fresh parsley, and serve warm.
