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Creamy caramelized onion spaghetti with chopped parsley on top.

Caramelized Onion Pasta

This rich and comforting Caramelized Onion Pasta features sweet, slow-cooked onions in a creamy Parmesan sauce tossed with your favorite pasta. Perfect for easy weeknight dinners, budget-friendly recipes, and delicious vegetarian meals.
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Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Course Main Course
Cuisine Italian
Servings 4 people
Calories 420 kcal

Ingredients
  

  • 2 tbsp olive oil
  • 2 tbsp unsalted butter
  • 2 large yellow onions, thinly sliced
  • 1 tsp sugar (optional)
  • 4 cloves garlic, minced
  • 12 oz pasta (spaghetti, fettuccine, or rigatoni)
  • 0.5 cup reserved pasta water
  • 0.75 cup heavy cream
  • 0.5 cup grated Parmesan cheese
  • to taste salt and black pepper
  • for garnish chopped parsley (optional)

Instructions
 

  • Heat olive oil and butter in a large skillet over medium-low heat.
  • Add sliced onions and a pinch of salt. Cook slowly, stirring occasionally for 25-30 minutes until onions are deeply caramelized and golden brown. Add sugar if desired to aid caramelization.
  • Stir in minced garlic and cook for 1-2 minutes until fragrant.
  • Meanwhile, cook pasta in salted boiling water until al dente. Reserve ½ cup pasta water and drain pasta.
  • Add heavy cream to the skillet with onions and garlic, bringing it to a gentle simmer.
  • Stir in Parmesan cheese and a splash of reserved pasta water, stirring until a creamy sauce forms.
  • Add the cooked pasta to the skillet, tossing to coat evenly. Adjust sauce consistency with more pasta water if needed.
  • Season with salt and pepper to taste.
  • Garnish with chopped parsley and extra Parmesan if desired. Serve immediately.

Nutrition

Serving: 1peopleCalories: 420kcalCarbohydrates: 52gProtein: 11gFat: 18gSaturated Fat: 7gCholesterol: 20mgSodium: 240mgFiber: 3gSugar: 7g
Keyword Budget-Friendly Recipes, Caramelized Onion Pasta, Easy Weeknight Dinners, Healthy Comfort Food, High Protein Meals, Quick Family Meals, Vegetarian Meals
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