Go Back
If you're searching for a dish that embodies comfort and flavor, look no further than caramelized onion pasta. This delightful recipe has gained popularity among home cooks and food enthusiasts alike, thanks to its rich, savory profile and simplicity. The warmth of caramelized onions paired with your choice of pasta creates a dish that feels indulgent yet accessible—a true staple for busy weeknights or cozy gatherings.

Caramelized Onion Pasta

Indulge in the warmth and flavor of caramelized onion pasta, your new go-to comfort food recipe! This simple yet satisfying dish transforms everyday ingredients into a luxurious experience, perfect for weeknights or gatherings. Learn the secrets to perfectly caramelized onions, choose between spaghetti and fettuccine, and elevate your meal with aromatic garlic and rich Parmesan cheese. Click through to explore the full recipe and start cooking a comforting masterpiece today!
Print Recipe Pin Recipe

Ingredients
  

12 oz spaghetti or fettuccine

3 large yellow onions, thinly sliced

3 tablespoons olive oil

2 tablespoons butter

4 cloves garlic, minced

1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried thyme)

1/4 teaspoon red pepper flakes (optional)

Salt and black pepper to taste

1/2 cup grated Parmesan cheese (plus extra for serving)

Fresh parsley, chopped, for garnish

Instructions
 

Cook the pasta: In a large pot, bring salted water to a boil. Add the spaghetti or fettuccine and cook according to package instructions until al dente. Reserve 1 cup of pasta water, then drain and set aside.

    Caramelize the onions: In a large skillet, heat the olive oil and butter over medium heat. Once melted, add the sliced onions. Stir occasionally for about 25-30 minutes, or until they turn deep golden brown and caramelized. If they start to stick, reduce the heat and add a splash of reserved pasta water.

      Add garlic and seasonings: Once the onions are caramelized, add the minced garlic, thyme, and red pepper flakes (if using). Cook for an additional 2-3 minutes until fragrant. Season with salt and black pepper to taste.

        Combine with pasta: Add the drained pasta to the skillet with the caramelized onions. Toss to combine. If the mixture seems dry, gradually add some of the reserved pasta water until you reach the desired consistency.

          Finish with cheese: Stir in the grated Parmesan cheese until melted and evenly distributed. Adjust seasoning if necessary.

            Serve: Plate the pasta in individual bowls, topping each with additional grated Parmesan and a sprinkle of fresh parsley for garnish.

              Prep Time, Total Time, Servings: 10 minutes | 40 minutes | 4 servings

                - Presentation Tips: Serve the pasta in a nest formation, garnished with extra parsley and a light drizzle of olive oil. Use a coarse grater for the Parmesan for a rustic look.