Step 1: Cook the Pasta

• Bring a large pot of salted water to a boil. Add the spaghetti and cook until al dente, following the package instructions. Before draining, reserve about ½ cup of the pasta cooking water—this starchy water helps bind the sauce to the pasta.

Step 2: Sauté the Garlic and Pepper Flakes

• While the pasta is cooking, heat the olive oil in a large skillet over medium heat. Add the thinly sliced garlic and sauté for 1–2 minutes until it’s just golden and aromatic. Be sure not to let the garlic burn, as it will turn bitter. Add the red pepper flakes for a touch of heat and stir for 30 seconds more.

Tip: Slice your garlic as thinly as possible—it toasts evenly and releases more flavor.

Step 3: Toss Pasta in the Sauce

• Add the drained pasta directly to the skillet with the garlic and oil mixture. Toss well to coat every strand. If the mixture looks dry, add a few tablespoons of the reserved pasta water to loosen the sauce and help it cling to the noodles.

Step 4: Finish and Garnish

• Turn off the heat and stir in the fresh chopped parsley for a bright, herbal note. If you're using Parmesan cheese, now is the time to sprinkle it on top. Give everything one final toss and serve immediately.