Let’s get cooking! Here’s a detailed, step-by-step guide:

Step 1: Cook Pasta

Bring a large pot of salted water to a boil.

Add the spaghetti and cook according to the package directions, until al dente (firm to the bite).   

Reserve at least 1/2 cup of the starchy pasta water before draining the pasta. This water is crucial for creating a creamy, emulsified sauce.

Drain the pasta in a colander.

Step 2: Sauté Garlic and Red Pepper Flakes

While the pasta is cooking, prepare the sauce. In a large pan or skillet, heat the olive oil over medium heat.

Add the thinly sliced garlic and red pepper flakes to the pan.

Sauté until the garlic is golden brown but not burnt, about 2-3 minutes. Watch it carefully, as garlic can burn quickly. The goal is to infuse the oil with the garlic and chili flavor.

Step 3: Toss Pasta with Sauce

Add the cooked and drained spaghetti to the pan with the garlic and oil.

Toss the pasta to coat it evenly with the infused oil.

Add the reserved pasta water, a little at a time, tossing continuously, until a light, creamy sauce forms. The starch in the pasta water will help to emulsify the oil and create a sauce that clings to the noodles.

Step 4: Season and Serve

Season the pasta with salt and pepper to taste.

Garnish with chopped fresh parsley and lemon zest, if desired.

Serve immediately. This dish is best enjoyed hot!

Enjoy this classic and delicious Spaghetti Aglio e Olio!