Spaghetti Aglio Olio With Zucchini

Updated June 26, 2026

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Ready In
45 min
Rating
5(77)
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When you’re up late and in need of quick sustenance that won’t weigh you down before bed, this garlic and oil pasta is a revelation, especially for zucchini lovers. Salt the summer squash to concentrate its flavor, then stir-fry it in the hot oil to create a delicious vegetable and infuse the oil. With a dish as quick and as simple as this, the quality of the individual ingredients matters a whole lot: Dried red chiles and whole fresh parsley leaves season the olive oil as much as they speckle the dish with Italian American color.

Featured in: You’re Just Six Ingredients Away From This Zucchini Pasta

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Ingredients

Yield:4 servings
  • 4 large zucchini (about 2 pounds), trimmed, halved and cut into ½-inch-thick batons

  • Kosher salt (such as Diamond Crystal)

  • 1 pound spaghetti, preferably bronze-die extruded (see Tips)

  • 10 to 12 garlic cloves

  • 4 dried whole red chiles, such as guajillo or chiles de árbol (see Tips)

  • 4 cups loosely packed fresh parsley leaves and tender stems (from 1 large bunch)

  • ½ cup extra-virgin olive oil

  • 1 ½ cups (about 5 ounces) grated Parmesan (optional)

Ingredient Substitution Guide
Nutritional analysis per serving (4 servings)

101 grams carbs; 24 milligrams cholesterol; 879 calories; 23 grams monosaturated fat; 4 grams polyunsaturated fat; 10 grams saturated fat; 39 grams fat; 8 grams fiber; 1142 milligrams sodium; 33 grams protein; 10 grams sugar

Note: The information shown is Edamam’s estimate based on available ingredients and preparation. It should not be considered a substitute for a professional nutritionist’s advice.

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Preparation

  1. Step 1

    Place the zucchini in a large colander set over a medium bowl or in the sink. Add 2 teaspoons of salt and toss until evenly coated. Set aside to drain.

  2. Step 2

    Bring a large pot of salted water to a boil over high heat. Add the spaghetti and cook, stirring occasionally, until 2 minutes shy of al dente.

  3. Step 3

    While the pasta cooks, thinly slice the garlic. Stem and seed the chiles, then tear them into bite-size pieces. Finely chop half of the parsley, leaving the other half whole.

  4. Step 4

    When the pasta is done cooking, turn off the heat. Transfer the zucchini to a medium bowl, then pat very dry with a clean towel. Reserve about 1 cup of the pasta cooking water. Drain the pasta into the colander, then return the pot to the stove. (As it sits, the residual heat should remove any remaining moisture.)

  5. Step 5

    To the empty pot, add the oil, garlic, chiles and the whole parsley (reserving the chopped parsley) and place over medium heat. Season with salt to taste and cook, stirring constantly, until the garlic is fragrant and just starts to brown at the edges, 2 to 4 minutes. Add the zucchini and continue to cook, stirring occasionally, until it turns bright green, another 2 to 3 minutes. Add the reserved pasta water and stir, scraping up any browned bits on the bottom of the pot.

  6. Step 6

    Add the drained spaghetti and stir until well combined. Add the reserved chopped parsley and cheese, if using. Taste for salt, and add more if needed. Serve immediately.

Tips
  • Any spaghetti works here, but with such a minimalist dish, it doesn’t hurt to use pasta that’s been extruded specifically from bronze die, which results in a rough, porous surface that absorbs more flavor.

  • Mild in heat with rich, savory fruitiness, dried guajillo chiles and chiles de arbol can be found at many supermarkets, Mexican grocery stores and online. A single teaspoon of crushed red pepper flakes works in a pinch; just be sure to use a dried red chile that’s fresh and fragrant. A single whiff should smell intoxicatingly sweet.

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Ratings

5 out of 5
77 user ratings
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Comments

@LBJr totally get it. But in this case, if you try to get browning you’ll end up with zucchini slop. I’m trying to teach people to enjoy the squash in a new way, a different kind of texture that I think is firmer, juicier and more aromatic (less muddled).

Completely agree w using fresh garlic, which makes this dish seasonal. Garlic is being harvested now in late june and over the next few weeks in the mid-altantic states depending on the varietal and available at farmers market (if you don't grow it yourself). The skins are not dried yet, and the bulbs are juicy, a revelation if you never had it. It's a perfect use for aglio and olio pasta or any dish where you want the garlic to shine.

One suggestion is to use a Cocozelle zucchini, if you can find it. It’s an Italian heirloom variety. It has a nice flavor (in contrast to other zucchinis). I’ve grown it for several years here in Maine.

It seems that 85% of savory recipes call for "heat" of some kind (red pepper flakes, various types of chili's, Thai chili. Also, exotic spice combinations that I don't/won't stock in my pantry). Please send alternatives!!!) I can't/don't do hot, spicy foods. It's a "burning in my mouth thing. I despair of seeing alternatives.

It sounds like you are very sensitive to capsicum, the "hot" characteristic of chilis. If black pepper doesn't bother you, substitute that instead. You can add whole peppercorns to the dish and discard them at the end of cooking, or grate pepper coarsely on the finished pasta to gain the added flavor dimension without pain.

@Evelyn Kersey I so agree! It’s a shame because the subtle sweetness of the zucchini with the garlic and oil is enough of a taste sensation. These hot spices rob and dominate the palate.

@John, I found seeds for Cocozelle zucchini last summer and grew it in my garden. It was fabulous. I'm growing it this year, too. I found them in Seed Savers Exchange. Also found some awesome Italian peppers...

This was delicious and a great way to use some of our garden zucchini.

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