Spaghetti Aglio e Olio with Roasted Tomatoes is a quick Italian pasta recipe made with spaghetti, garlic, olive oil, crushed red pepper flakes, and jammy roasted tomatoes. This easy weeknight dinner is a delicious twist on the classic dish and comes together in just 20 minutes.
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Instructions
Roast the tomatoes: If you have not already roasted them, spread them on a baking tray or air fryer tray, season as needed, and roast until soft, jammy, and lightly caramelized. You can make them ahead or roast them while the pasta cooks.
Cook the Spaghetti: Bring a large pot of salted water to a boil. Add the spaghetti to boiling water and cook until al dente according to package instructions. Before draining, reserve about ½ to 1 cup of pasta water.
Slice the garlic: While the pasta is cooking, thinly slice the garlic using a sharp knife or a mandolin slicer for even, uniform slices.
Infuse the olive oil with garlic: In a large skillet or pan, add olive oil and garlic slices (while the oil is still cold). Cook gently over low to medium-low heat, stirring often, until fragrant and lightly golden. Do not let the garlic burn, as it can turn bitter.
Add the spices: Stir in the crushed red pepper flakes, salt, and black pepper, and cook for a few seconds to let them flavor the oil.
Toss in the pasta in the sauce. Once the pasta is cooked (al dente), using tongs, transfer the spaghetti straight from the pot to the skillet, along with a little starchy water, then add more reserved pasta water as needed while tossing. This helps the garlicky oil emulsify into a light, glossy sauce that coats the pasta beautifully.
Add the roasted tomatoes. Stir in the roasted tomatoes and gently toss to combine. They will soften further and release their juices into the pasta.
Serve. Taste and season with salt and black pepper as needed. Garnish with dried parsley and parmesan, and immediately while its nice and hot.
Notes
Have your ingredients ready: This recipe comes together quickly once the pasta starts cooking, so it helps to have everything measured, sliced, and ready to go before you begin.
Salt the pasta water well: This is your first chance to season the pasta, and it makes a big difference in the final flavor.
Do not overcook the pasta: Cook the spaghetti until al dente, so it holds its texture when tossed with the sauce.
Reserve pasta water: The key to creating a glossy, non-greasy, silky sauce that coats the pasta beautifully is to form an emulsion with the garlic oil and the starchy pasta water.
Slice the garlic evenly: Thin, even garlic slices cook more uniformly and infuse the oil with a milder, sweeter flavor. A mandolin works great for getting those even slices. Minced garlic is more likely to burn quickly and turn bitter, so it’s best to avoid it here.
Don’t skimp on the olive oil: it's the backbone of this sauce, so use a good-quality extra-virgin olive oil for the best flavor.
Start the garlic in cold oil: Add the sliced garlic to cold olive oil, then warm it gently over low heat. This helps the garlic slowly infuse the oil with flavor without burning or turning bitter.
Keep the heat low: Cook the garlic gently until fragrant and lightly golden, not brown or burnt. Burnt garlic can make the dish bitter.
Finish the pasta in the pan: Transfer the spaghetti straight from the pot to the skillet, then toss with pasta water for a light, glossy garlic sauce that clings beautifully.
Roast the tomatoes until jammy: The more caramelized and concentrated they are, the more flavor they add to the pasta.
Adjust the spice to taste: Use more or less crushed red pepper flakes depending on how spicy you like it.
Keep it classic: Skip the roasted tomatoes for a more traditional spaghetti aglio e olio.