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Caramelized Onion Pasta

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Caramelized Onion Pasta is a rich and savory dish made with slow-cooked onions that bring deep sweetness, combined with al dente pasta and a hint of cheese or herbs. It’s a comforting and elegant meatless meal.

Ingredients

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  • 2 tbsp olive oil
  • 2 tbsp butter
  • 3 large yellow onions, thinly sliced
  • 1/2 tsp salt
  • 1/4 tsp black pepper
  • 1/2 tsp sugar (optional, to aid caramelization)
  • 3 cloves garlic, minced
  • 8 oz spaghetti or fettuccine
  • 1/2 cup reserved pasta water
  • 1/4 cup grated Parmesan cheese
  • Fresh thyme or parsley for garnish (optional)

Instructions

  1. In a large skillet, heat olive oil and butter over medium heat until melted.
  2. Add sliced onions, salt, pepper, and sugar (if using). Cook slowly, stirring often, for 25–30 minutes until onions are deeply golden and caramelized.
  3. Add minced garlic and cook for 1–2 minutes until fragrant. Remove from heat.
  4. Meanwhile, cook pasta according to package instructions. Reserve 1/2 cup of pasta water, then drain.
  5. Return skillet to low heat. Add cooked pasta to the onions and toss to combine.
  6. Add reserved pasta water a little at a time until a silky sauce forms that coats the pasta.
  7. Stir in Parmesan cheese and toss until well mixed. Adjust seasoning if needed.
  8. Garnish with fresh herbs if desired and serve warm.

Notes

  • Use a mix of yellow and red onions for deeper flavor variation.
  • For extra richness, stir in a splash of cream or a knob of butter at the end.
  • Make it vegan by omitting Parmesan or using a plant-based alternative.

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