Spaghetti Aglio E Olio

Spaghetti aglio e olio is pasta with garlic, olive oil, and red pepper flakes, finished with parsley and cheese. The whole dish comes together in the pan in minutes, with the starchy pasta water turning the oil into a silky sauce that clings to every strand.

Ingredients for Spaghetti Aglio E Olio

Spaghetti is the backbone of the dish, cooked just short of tender so it finishes in the pan. Olive oil is the base of the sauce, infused with garlic flavor and kept loose and glossy with pasta water, which carries starch that binds everything together. Garlic cloves are sliced thin and cooked low and slow until golden and mellow, never brown. Red pepper flakes add heat and complexity without overpowering. Parsley brings freshness at the end. Parmesan, grated fresh, adds salt and umami to finish.

Why This Spaghetti Aglio E Olio Works

The key is cooking the garlic gently in cool oil so it releases its flavor without turning bitter. If the oil is too hot, the garlic browns and tastes harsh. Low heat lets the garlic soften and sweeten, infusing the oil with mellow depth.

Pasta water is the secret to the sauce. The starch in that water emulsifies with the oil, turning it into a creamy coating instead of a slick puddle. You add the hot pasta to the oil and toss it all together, and the starch thickens the oil into a sauce that sticks to the noodles. Without it, you have oily pasta.

Cooking the pasta one to two minutes short of the package time matters because it finishes in the pan off the heat, where it absorbs the oil and sauce. If you cook it all the way in the water, it gets soft and mushy by the time you toss it.

Mistakes To Avoid

Browning the garlic is the most common mistake. Once it turns golden-brown, it tastes acrid and bitter, and you cannot fix it. Start with cool oil and medium heat, and watch it the whole time.

Draining all your pasta water and then adding it back defeats the purpose. The starch settles at the bottom of the pot. If you let it sit, the water poured off is mostly clear. Save the water before you drain the pasta, or keep a cup of the cooking water in the pot.

Cooking the pasta all the way done in the pot means it has nowhere left to go but soft. The pasta continues to cook in the hot oil and starch, so you need a head start by pulling it out early.

Skipping the pasta water altogether leaves you with oily noodles instead of a sauce. The starch in that water is what makes the oil coat the pasta and cling to it. Plain oil slides right off.

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Ingredients

• 1/2 pound spaghetti
• 1/4 cup olive oil
• 6 garlic cloves, thinly sliced
• 1/2 teaspoon red pepper flakes
• 1 cup pasta cooking water
• Salt and black pepper
• 1/4 cup fresh parsley, chopped
• 1/2 cup grated Parmesan

Step-by-step Instructions

1. Bring a large pot of salted water to a rolling boil over high heat.
2. Add the spaghetti and cook for one to two minutes less than the package says, stirring once at the start so it does not stick.
3. Before draining, reserve one cup of the pasta cooking water in a measuring cup or small bowl.
4. Drain the pasta in a colander and set it aside.
5. Pour the olive oil into a large skillet and add the sliced garlic and red pepper flakes, then set the pan over medium heat.
6. Cook for three to four minutes, stirring often, until the garlic turns pale golden and smells sweet and mellow. Do not let it brown.
7. Add the hot pasta to the skillet and toss to coat with the oil, cooking for one minute over medium heat.
8. Pour in half of the reserved pasta water and toss again, cooking for two to three minutes until the sauce turns creamy and clings to the noodles. Add more pasta water if it looks dry or oily.
9. Remove from heat, stir in the parsley, and taste for salt and black pepper.
10. Divide between two bowls and top each with Parmesan.