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Plate of creamy caramelized onion pasta topped with herbs and cheese

Creamy Caramelized Onion Pasta

Indulge in this creamy caramelized onion pasta — a luxurious, savory dish that balances the sweetness of slow-cooked onions with rich cream and Parmesan. Comforting, flavorful, and ready in about 30 minutes.
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Préparation 10 minutes
Cuisson 20 minutes
Temps total 30 minutes
Portions: 2 plates
Plat: Main, Pasta
Cuisine: Italian-inspired
Calories: 680
Ingredients Equipment Préparation Notes

Ingrédients
  

  • 8 oz Pasta of choice spaghetti, penne, or fettuccine
  • 2 Onions large, thinly sliced
  • 2 tbsp Butter or olive oil
  • 1 cup Parmesan cheese grated
  • 1 cup Heavy cream or vegan substitute
  • Chili oil to taste, optional
  • Salt to taste
  • Black pepper to taste, freshly ground
  • Fresh herbs parsley or thyme, for garnish

Équipement

  • Large Skillet
  • Pot for boiling pasta
  • Wooden Spoon

Préparation
 

  1. Bring a large pot of salted water to a boil and cook the pasta according to package instructions until al dente. Reserve ½ cup of pasta water, then drain (do not rinse).
  2. In a large skillet, heat butter or olive oil over medium heat. Add the thinly sliced onions and cook slowly on medium-low heat for 15–20 minutes, stirring occasionally, until deeply golden and caramelized.
  3. In a small bowl, mix the heavy cream and grated Parmesan cheese. Season with salt, pepper, and a drizzle of chili oil if desired.
  4. Add the cooked pasta to the caramelized onions in the skillet. Pour in the cream mixture and toss to coat. Add a splash of the reserved pasta water to adjust consistency if needed.
  5. Heat through on low heat for 2–3 minutes until the sauce thickens and clings to the pasta. Taste and adjust seasoning.
  6. Serve immediately, garnished with fresh herbs, extra Parmesan, and a drizzle of chili oil. Enjoy your creamy caramelized onion pasta warm!

Notes et conservation

For variation, add sautéed mushrooms, spinach, or grilled chicken. Use coconut or cashew cream for a vegan version, and gluten-free pasta if needed. Leftovers keep 3 days in the fridge; reheat gently with a splash of cream or water.