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Caramelized onion pasta with chilli oil is my go-to dinner when I want something rich yet simple All it takes is a handful of pantry staples and about twenty minutes but the flavors are deep buttery and just a bit fiery from the chilli oil A perfect combination of sweet onions silky cream and a gentle kick that never fails to impress This dish first came to life when I needed a cozy meal on a rainy night and now it is my favorite way to treat myself after a long day
Spaghetti and caramelized onions always feel fancy even when the pantry is nearly bare The first time I tossed this pasta together it felt like magic and it became an instant classic with friends and family
Ingredients
- Spaghetti: brings the texture and body for the sauce choose a classic or whole wheat for added flavor
- Chilli oil: infuses heat and an earthy undertone I love using a homemade version with garlic bits
- Heavy cream: adds a luscious finish making the sauce glossy choose full-fat for extra richness
- Large red onion: offers sweetness that deepens when cooked pick one that feels heavy and firm for the best flavor
- Olive oil: allows the onions to caramelize without burning go for a fruity extra virgin olive oil for best results
- Garlic cloves: deliver a savory aromatic base always use fresh for the boldest punch
- Italian seasoning: provides herbaceous notes and brings all the flavors together a good quality blend matters
- Salt: seasons the pasta and sauce taste as you go for perfect results
- Optional parmesan: lends a salty nutty finish always grate it fresh if possible
- Optional chopped parsley: brings freshness and color look for bright green leaves and avoid any that are limp
Step-by-Step Instructions
- Cook the Pasta:
- Fill a large pot with water and bring to a rolling boil Salt the water generously This step not only flavors the pasta but helps it cook evenly Drop in the spaghetti and cook just until al dente as directed on the package Reserve about a cup of pasta water before draining
- Caramelize the Onions:
- While the pasta cooks thinly slice a large red onion Warm olive oil in a skillet over medium heat Once shimmering add the onions and stir to coat Continue cooking for six to seven minutes stirring every minute or two until onions become deeply golden and sweet Do not rush or crank the heat high as slow cooking develops the best flavor
- Add Garlic and Chilli Oil:
- Once the onions are caramelized add minced garlic to the pan Stir for about one minute until fragrant Pour in the chilli oil It will sizzle and instantly perfume the kitchen This is my favorite moment when the spicy aroma mixes with the sweet onions
- Incorporate Cream and Seasonings:
- Reduce the heat to low and pour in the cream letting it bubble gently Add Italian seasoning and a bit of salt Taste now and adjust salt if needed If you want extra richness stir in some fresh parmesan
- Combine Everything:
- Add the drained pasta directly to the skillet Toss everything together adding splashes of reserved pasta water as needed for a silky sauce Toss in fresh parsley if using Serve piping hot with more cheese on top
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You Must Know
- Incredibly flexible recipe works with any long pasta shape
- Balances sweet spicy creamy and herby flavors
- Leftovers reheat beautifully for lunch the next day
I have a special love for the red onions the smell and taste as they caramelize brings back childhood memories of weekends spent in the kitchen with my grandmother She taught me that patience while sweating onions makes all the difference
Storage Tips
Store any leftovers in a sealed container in the fridge for up to three days When reheating add a splash of milk or cream to loosen up the sauce and revive its texture
Ingredient Substitutions
Feel free to swap spaghetti for any pasta you have on hand Penne rigatoni or fettuccine work beautifully Vegan cream or coconut cream can replace heavy cream and if you are out of chilli oil a spoonful of red pepper flakes in olive oil is a great stand in
Serving Suggestions
Pair this pasta with a simple green salad and crusty bread for a complete meal For extra protein toss in pan-seared shrimp or sautéed chicken crisp bacon bits also make it extra indulgent
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Cultural Context
Caramelized onions are a classic foundation in Italian and Mediterranean cooking This pasta is a great snapshot of how humble ingredients come together in a dish inspired by cucina povera which turns staples into something truly special
Recipe FAQs
- → How do I caramelize onions for this pasta?
Slice onions thinly and cook them in olive oil over medium heat, stirring occasionally, until they turn golden and sweet, usually about 6-7 minutes.
- → Can I use a different type of pasta?
Absolutely! Any pasta shape can work. Spaghetti, linguine, or even penne are delicious options for this sauce.
- → Is it possible to adjust the spice level?
Yes, simply alter the amount of chilli oil or use mild varieties to control the heat to your preference.
- → What cream is best for the sauce?
Heavy cream creates a rich texture, but you can use half-and-half for a lighter result. Avoid milk for best consistency.
- → Are there any optional toppings?
Grated parmesan and chopped fresh parsley make wonderful garnishes, adding flavor and a touch of color to the dish.