Here’s how to bring this simple yet satisfying dish to life:

1. Bring a large pot of salted water to a boil. Add the spaghetti and cook according to package directions until al dente, usually about 8-10 minutes.
2. While the pasta cooks, heat the olive oil in a large skillet over medium heat. Add the sliced garlic and sauté until golden brown, about 2-3 minutes. Be careful not to burn the garlic, as it can turn bitter.
3. Add the red pepper flakes to the skillet, stirring for about 30 seconds to release their flavor.
4. Reserve 1/2 cup of the pasta cooking water, then drain the spaghetti.
5. Add the drained spaghetti directly into the skillet with the garlic and oil. Toss well to coat, adding reserved pasta water as needed to loosen the sauce.
6. Season with salt to taste, then stir in the Parmesan cheese, parsley, and optional lemon juice for a fresh twist.
7. Taste and adjust seasonings if necessary. Serve immediately, garnished with additional cheese and parsley if desired.

Cooking tip: Always reserve some pasta water. It’s the secret to silky, well-coated pasta dishes.