Caramelized Onion Pasta with Chilli Oil

Sweet, savory, and just the right amount of spicy—this Caramelized Onion Pasta with Chilli Oil is the perfect comfort dish with a gourmet twist. Richly golden onions melt into the pasta, while a drizzle of fragrant chilli oil adds a fiery kick that brings everything together. It’s simple, satisfying, and bursting with deep flavor, making it ideal for weeknights or cozy evenings in.

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Why You’ll Love This Recipe
Deep, Complex Flavors – Sweet onions meet spicy chilli in every bite.
Easy to Make – Minimal ingredients, maximum impact.
Vegetarian-Friendly – Comforting without needing meat.
Budget-Friendly – Uses pantry staples you likely have on hand.
Customizable Heat – Add as much or as little chilli oil as you like.

Ingredients You’ll Need

For the Pasta:

• 8 oz (225 g) spaghetti or pasta of choice
• Salt (for pasta water)
• 1 tbsp olive oil

For the Caramelized Onions:

• 2 tbsp olive oil or butter
• 3 large yellow onions, thinly sliced
• 1 tsp sugar (helps with caramelization)
• ½ tsp salt
• 1 tbsp balsamic vinegar (optional, for depth)

For the Chilli Oil:

• ¼ cup olive oil
• 1–2 tsp red pepper flakes (adjust to heat level)
• 1 garlic clove, minced
• ½ tsp smoked paprika or chili powder (optional for extra flavor)

For Garnish:

• Fresh parsley or basil, chopped
• Grated parmesan (optional)
• Fresh cracked black pepper

Tools You’ll Need

• Large skillet or sauté pan
• Medium saucepan
• Mixing spoon or tongs
• Strainer or colander
• Knife and cutting board

Step-by-Step Instructions

Step 1: Caramelize the Onions

1. In a large skillet, heat 2 tbsp olive oil or butter over medium-low heat.
2. Add sliced onions, salt, and sugar. Cook slowly for 25–30 minutes, stirring occasionally, until deeply golden and caramelized.
3. Stir in balsamic vinegar in the final minutes if using. Set aside.

Step 2: Cook the Pasta
4. Meanwhile, bring a large pot of salted water to a boil.
5. Cook pasta according to package instructions until al dente.
6. Reserve ½ cup pasta water, then drain the pasta.

Step 3: Make the Chilli Oil
7. In a small saucepan or skillet, heat ¼ cup olive oil over low heat.
8. Add red pepper flakes, garlic, and smoked paprika.
9. Sauté gently for 1–2 minutes until fragrant—do not burn the garlic.
10. Remove from heat and let the oil infuse.

Step 4: Combine Everything
11. Add drained pasta to the skillet with the caramelized onions.
12. Toss to combine, adding a splash of reserved pasta water to loosen the sauce.
13. Drizzle chilli oil over the pasta, starting with half and adding more to taste.
14. Mix well and heat for 1–2 minutes to let flavors blend.

Step 5: Garnish and Serve
15. Plate the pasta and sprinkle with fresh herbs, cracked black pepper, and grated parmesan if desired.
16. Serve hot, with extra chilli oil on the side.

Tips for Perfect Caramelized Onion Pasta
Go Low & Slow – Caramelizing onions properly takes time, but it’s worth it.
Use Good Oil – A quality olive oil makes a big difference in both the chilli oil and onion flavor.
Save the Water – The starchy pasta water helps bind the sauce.
Adjust the Heat – Red pepper flakes can be spicy—start small and build.
Make it Creamy – Add a spoonful of cream or cream cheese for a richer version.

Serving Suggestions

• Side Salad: A crisp arugula or mixed greens salad balances the richness.
• Garlic Bread: For extra indulgence and to soak up the sauce.
• Protein Boost: Top with a poached egg, sautéed mushrooms, or grilled chicken.
• Wine Pairing: Try a chilled white wine or light red like Pinot Noir.

How to Store & Reheat

Storing:
Refrigerate leftovers in an airtight container for up to 3 days.

Reheating:

• Stovetop: Warm with a splash of water or broth to rehydrate.
• Microwave: Heat in 30-second intervals, stirring between each round.

Frequently Asked Questions

1. Can I use store-bought chilli oil?
   Yes, but homemade offers fresher flavor and control over the heat.
2. Can I make it vegan?
   Absolutely—just skip the cheese or use a plant-based alternative.
3. What’s the best pasta shape?
   Spaghetti, linguine, or bucatini all work beautifully.
4. Can I add veggies?
   Yes! Spinach, cherry tomatoes, or roasted peppers are great additions.
5. Is it very spicy?
   It depends on how much chilli oil you use. Start with less and add more as needed.

Final Thoughts
This Caramelized Onion Pasta with Chilli Oil is the perfect mix of cozy and bold—sweet onions and spicy chilli oil come together to create an unforgettable pasta dish that feels gourmet but is incredibly easy to make. Perfect for a quiet night in or an elegant dinner with friends.

Give it a try and let your kitchen fill with the rich aroma of caramelized onions and garlic-infused oil. It’s comfort food, elevated.

Preparation Time: 10 minutes
Cooking Time: 30 minutes
Cuisine: Italian-Inspired

Nutritional Information (Per Serving – serves 4):
Calories: 420 | Protein: 10g | Carbohydrates: 50g | Fat: 20g | Fiber: 4g | Sodium: 220mg

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