Bring a large pot of salted water to a boil. Add the spaghetti and cook according to package instructions until al dente.

Reserve 1 cup of pasta water, then drain the pasta in a colander.

In a skillet over medium heat, melt the butter. Add the minced garlic and sauté for 1-2 minutes until fragrant.

Stir in the chopped parsley, salt, and pepper.

Add the drained pasta to the skillet with the garlic butter sauce. Toss to combine, adding reserved pasta water as needed to achieve desired consistency.

Serve immediately, topped with grated Parmesan cheese.