Chili Oil Caramelized Onion Pasta
Watch a short video demonstration for this recipe.
Equipment
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Frying pan
Ingredients
- 1 small onion, thinly sliced
- 2 cloves garlic, minced
- 6 oz pasta
- 1 tbsp butter
- 1 tbsp chili oil
- ½ cup heavy cream
- Salt and pepper to taste
- ¼ cup grated parmesan
- Optional garnish: more chili oil, parmesan, and chives
Instructions
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Slice the onion thinly and mince the garlic.
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Bring a large pot of salted water to a boil and cook the pasta until it is one minute before al dente. Reserve about ½ cup of the pasta cooking water, then drain.
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Heat a frying pan over low heat and melt the butter. Add the sliced onions and cook slowly, stirring occasionally, for about 30 minutes until they are deeply golden, jammy, and caramelized. Remove the onions and set aside.
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In the same pan, add the chili oil and sauté the minced garlic over medium-low heat for about 2 minutes until fragrant. Be careful not to burn the garlic.
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Pour in the heavy cream and return the caramelized onions to the pan. Stir to combine and warm the mixture until it slightly thickens.
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Add the drained pasta to the sauce and toss to coat. If the sauce seems too thick, loosen it with a splash of the reserved pasta water until you reach the desired consistency.
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Season with salt and freshly ground pepper, then stir in the grated parmesan until melted and evenly distributed.
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Serve immediately, garnished with additional chili oil, more parmesan, and chopped chives if desired.
Video
Nutrition
Nutrition information is an estimate and should be used as a guideline only.
Sweet, Spicy, and Comforting in Every Bite
This chili oil caramelized onion pasta is a go-to when you want something cozy with a touch of sophistication. The secret is the onions: cooked slowly until they become sweet, jammy, and almost melt into the sauce. Combined with a splash of chili oil for heat, cream for richness, and parmesan for savory depth, the result is an indulgent yet simple pasta.
Why Caramelized Onions Make This Dish Shine
The balance of flavors is what makes this dish stand out. Slow-cooked onions bring sweetness and depth, chili oil adds a pleasant heat, and cream creates a silky sauce that carries the flavors. It’s quick enough for weeknights and impressive enough for company.
Ingredients for Chili Oil Caramelized Onion Pasta
- 1 small onion, thinly sliced
- 2 cloves garlic, minced
- 6 oz pasta
- 1 tbsp butter
- 1 tbsp chili oil
- ½ cup heavy cream
- Salt and pepper to taste
- ¼ cup grated parmesan
- Optional garnish: more chili oil, parmesan, and chives
How to Make Chili Oil Caramelized Onion Pasta
1. Slice the onion and mince the garlic.
2. Cook the pasta until one minute shy of al dente and reserve some pasta water.
3. Melt the butter in a pan over low heat and cook the onions for about 30 minutes, stirring occasionally, until caramelized. Remove and set aside.
4. In the same pan, add the chili oil and sauté the garlic for about 2 minutes until fragrant.
5. Add the cream and return the caramelized onions to the pan, stirring to combine.
6. Toss the pasta in the sauce, adding reserved pasta water a little at a time if you need to loosen the sauce.
7. Season with salt, pepper, and parmesan; toss again to combine.
8. Plate and garnish with extra chili oil, parmesan, and chopped chives if you like.
Tips and Variations
• For more savory depth, add crispy pancetta, bacon, or shredded rotisserie chicken.
• For a lighter sauce, replace the cream with a mix of reserved pasta water and extra parmesan.
• Stir in vegetables like spinach, kale, or sautéed mushrooms for extra texture and nutrition.
• Adjust heat by drizzling extra chili oil over the finished dish.
• Try different pasta shapes — fettuccine, bucatini, or rigatoni all work well.
Quick to Make, Easy to Love
Once the onions are on the stove, most of the process is hands-off. The final assembly takes only minutes, making this a dependable recipe for busy evenings or last-minute dinners. The creamy, spicy, and sweet combination is satisfying and addictive.
A Pasta Base That’s Easy to Customize
This sauce is a versatile base. Dress it up with proteins and vegetables or keep it simple for a quick solo meal. Either way, it’s a recipe that keeps people lingering at the table to savor the last bites.
Frequently Asked Questions
Can I make this without cream?
Yes. Use reserved pasta water and extra parmesan to create a lighter, clingy sauce that still coats the noodles well.
How do I know when the onions are caramelized?
They should be deep golden brown, jammy in texture, and sweet-smelling. That typically takes around 30 minutes over low heat.
Can I make this ahead of time?
You can caramelize the onions up to three days ahead and refrigerate them. Reheat before finishing the recipe.
What pasta shape works best?
Long pastas like spaghetti or fettuccine coat nicely, but short shapes such as rigatoni or penne also work.
Does it keep well for leftovers?
Yes. The sauce may thicken when chilled — add a splash of water or milk when reheating to loosen it.
More Recipes to Try
• Try a sweet-and-salty char siu chicken for a complementary main.
• Braised pork belly makes a rich, hearty pairing.
• For another spicy, creamy noodle option, try creamy kimchi noodles.