Caramelized Onion Pasta with Chilli Oil
Indulge in the rich flavors of Caramelized Onion Pasta with Chilli Oil, a dish that never fails to impress. The sweetness of caramelized onions paired with the kick of chili oil creates a perfect balance that will tantalize your taste buds. Whether you’re looking for a comforting meal for a cozy night in or a show-stopping dish to serve guests, this recipe is sure to become a favorite in your kitchen.
Why You’ll Love This Recipe?
- The combination of caramelized onions and chili oil creates a unique and delicious flavor profile.
- This dish comes together quickly and easily, making it perfect for busy weeknights or last-minute dinner plans.
- The versatility of this recipe allows you to customize it with your favorite pasta and garnishes.
Ingredient Notes:
For the Pasta:
- Pasta of your choice (spaghetti, fettuccine, or penne works well)
- Salt (for boiling pasta water)
For the Caramelized Onions:
- Large onions, thinly sliced
- Olive oil
- Butter
- Sugar (optional, to help caramelize)
- Salt and pepper, to taste
For the Chilli Oil:
- Olive oil
- Chili flakes (adjust based on preferred spice level)
- Garlic clove, minced
- Smoked paprika (optional)
- Salt
For Garnish:
- Fresh parsley, chopped (optional)
- Grated Parmesan cheese (optional)
- Extra chili oil (optional)
Step-by-Step Instructions:
- Cook pasta according to package instructions in salted water until al dente. Drain and set aside.
- In a large skillet, heat olive oil and butter over medium heat. Add sliced onions and cook until caramelized, about 20-30 minutes.
- In a separate pan, heat olive oil and sauté garlic until fragrant. Add chili flakes, smoked paprika, and salt. Cook for another minute.
- Toss cooked pasta with caramelized onions and chili oil mixture. Serve hot, garnished with fresh parsley, grated Parmesan cheese, and extra chili oil.
Helpful Tips:
- For a vegetarian version, use vegan butter or omit butter altogether.
- Add a splash of balsamic vinegar to the caramelized onions for an extra depth of flavor.
- Swap out regular pasta for whole wheat or gluten-free pasta for a healthier twist.
Expert Tips for the Best Results:
- Use a mix of olive oil and butter for the caramelized onions for a rich and flavorful base.
- Adjust the amount of chili flakes to suit your spice preference.
- Don’t rush the caramelization process—it’s worth the wait for perfectly sweet and golden onions.
Serving Suggestions:
Pair this dish with a simple green salad dressed with lemon vinaigrette for a refreshing contrast. A glass of crisp white wine or a cold beer complements the flavors of the dish beautifully.

Storage and Reheating Tips:
Store any leftovers in an airtight container in the refrigerator for up to 3 days. Reheat gently in a pan with a splash of water to prevent the pasta from drying out.
Frequently Asked Questions:
- Can I use red onions instead of yellow onions for caramelizing?
- Yes, red onions will work well and add a slightly different flavor profile to the dish.
- How can I make this dish spicier?
- Increase the amount of chili flakes or add a pinch of cayenne pepper for extra heat.
- Can I make the chili oil in advance?
- Yes, the chili oil can be made ahead and stored in a jar in the refrigerator for up to a week.
- What other toppings can I use for garnish?
- Try toasted breadcrumbs, chopped nuts, or a drizzle of truffle oil for added texture and flavor.
Conclusion:
Elevate your pasta game with this irresistible Caramelized Onion Pasta with Chilli Oil recipe. Whether you’re a seasoned chef or a novice cook, this dish is sure to become a staple in your repertoire. Try it out and let the flavors speak for themselves—your taste buds will thank you!
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Caramelized Onion Pasta with Chilli Oil
- Prep Time: 15 mins
- Cook Time: 30 mins
- Total Time: 45 mins
- Yield: 4 servings 1x
- Category: Main-course
- Method: Stovetop
- Cuisine: Italian
- Diet: Vegetarian
Description
Indulge in a flavorful pasta dish with caramelized onions and a kick of chili oil. This recipe combines sweet and spicy elements for a satisfying meal.
Ingredients
For the Pasta:
- 12 oz (340g) pasta of your choice (spaghetti, fettuccine, or penne works well)
- Salt (for boiling pasta water)
For the Caramelized Onions:
- 2 large onions, thinly sliced
- 2 tablespoons olive oil
- 1 tablespoon butter
- 1 teaspoon sugar (optional, to help caramelize)
- Salt and pepper, to taste
For the Chilli Oil:
- 1/4 cup olive oil
- 1 tablespoon chili flakes (adjust based on preferred spice level)
- 1 garlic clove, minced
- 1/2 teaspoon smoked paprika (optional)
- 1/2 teaspoon salt
For Garnish:
- Fresh parsley, chopped (optional)
- Grated Parmesan cheese (optional)
- Extra chili oil (optional)
Instructions
- Cook the pasta: Boil water with salt, and cook the pasta according to package instructions. Drain and set aside.
- Caramelize the onions: In a pan, sauté onions with olive oil, butter, sugar, salt, and pepper until caramelized.
- Make the chili oil: Heat olive oil with chili flakes, garlic, smoked paprika, and salt in a saucepan for chili oil.
- Combine: Toss the pasta with caramelized onions, chili oil, and garnish with parsley and Parmesan cheese.
Notes
- You can adjust the spice level by adding more or less chili flakes for the chili oil.
- Feel free to customize the pasta shape and type according to your preference.
Nutrition
- Serving Size: 1 plate
- Calories: 400 kcal
- Sugar: 5 g
- Sodium: 450 mg
- Fat: 20 g
- Saturated Fat: 5 g
- Unsaturated Fat: 12 g
- Trans Fat: 0 g
- Carbohydrates: 45 g
- Fiber: 5 g
- Protein: 10 g
- Cholesterol: 10 mg
Keywords: Pasta recipe, Caramelized onions, Chili oil, Italian cuisine, Vegetarian dish