Green Meal

Chilli-Caramelised Onion Spaghetti

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Chilli-Caramelised Onion Spaghetti

Lunch

Dinner

Silky spaghetti tossed in a cosy cream-and-chilli oil sauce with sweet, deeply caramelised red onions and garlic. It’s rich, a little spicy, and ridiculously satisfying.

👥

Serves

⏱️

Time

25 min

☁️

CO2e

25%

Let's cook it

Ingredients

4 oz dry spaghetti (about 2 servings)
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3 tbsp olive oil
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1 large red onion, thinly sliced
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3–4 cloves garlic, finely chopped
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2 tbsp chilli oil
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1/2 cup heavy cream
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1 tbsp Italian seasoning
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Salt to taste (plus 2 tsp for pasta water)
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Optional: 1/4 cup finely grated Parmesan, 2 tbsp chopped parsley

115 g dry spaghetti
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45 ml olive oil
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1 large red onion (≈200 g), thinly sliced
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12 g garlic (3–4 cloves), finely chopped
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30 ml chilli oil
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120 ml heavy cream
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6 g Italian seasoning
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Salt to taste (plus 10 g for pasta water)
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Optional: 30 g finely grated Parmesan, 8 g chopped parsley

🗒️ Ingredients

Steps

Boil pasta: Bring a large pot of water to a boil, add 2 tsp (10 g) salt, and cook spaghetti until al dente. Reserve 1/2 cup (120 ml) pasta water; drain.
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Caramelise onion: While pasta cooks, warm olive oil in a large pan over medium heat. Add sliced onion and cook, stirring, until soft and caramelised, about 6–8 minutes.
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Add aromatics: Stir in chopped garlic for 30–60 seconds until fragrant.
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Make it creamy: Add chilli oil and cream; sprinkle in Italian seasoning. Simmer 1–2 minutes to thicken slightly.
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Toss: Add cooked spaghetti to the pan. Loosen with splashes of pasta water until glossy and well-coated. Season with salt to taste.
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Finish: Serve as is, or top with Parmesan and parsley if using.

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