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One-Pot Creamy French Onion Pasta for Easy Weeknight Dinners

Close-up of creamy french onion pasta with melted cheese and fresh parsley garnish.

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Transform the rich flavors of French Onion Soup into a comforting, creamy pasta dish. This one-pot recipe minimizes cleanup while delivering deep, savory flavor from caramelized onions and melted Gruyère cheese, making it a perfect easy comfort food dinner.

Ingredients

Scale
  • 1 tablespoon olive oil
  • 2 large yellow onions, thinly sliced
  • 1 teaspoon granulated sugar
  • 1/2 teaspoon salt, plus more for seasoning
  • 2 cloves garlic, minced
  • 1 teaspoon dried thyme
  • 4 cups beef broth (or vegetable broth for vegetarian option)
  • 1 pound pasta (such as penne or rotini)
  • 1/2 cup heavy cream
  • 1 cup shredded Gruyère cheese, divided
  • 1/2 cup shredded Parmesan cheese, divided
  • 1/4 cup fresh parsley, chopped, for garnish

Instructions

  1. Heat the olive oil in a large pot or Dutch oven over medium heat. Add the sliced onions, sugar, and 1/2 teaspoon salt. Cook slowly, stirring occasionally, for 20 to 25 minutes until the onions are deeply caramelized and sweet. This step builds the essential flavor.
  2. Add the minced garlic and dried thyme to the pot. Cook for 1 minute until fragrant.
  3. Pour in the beef broth. Bring the mixture to a simmer, scraping up any browned bits from the bottom of the pot.
  4. Add the uncooked pasta to the pot. Stir well to submerge the pasta in the liquid.
  5. Bring the liquid back to a boil, then reduce the heat to medium-low, cover the pot, and cook for 12 to 15 minutes, stirring every few minutes to prevent sticking, until the pasta is al dente and most of the liquid is absorbed.
  6. Remove the pot from the heat. Stir in the heavy cream.
  7. Stir in 1/2 cup of the Gruyère cheese and 1/4 cup of the Parmesan cheese until the sauce is creamy. Season with additional salt and pepper to taste.
  8. Serve the pasta immediately, topping each portion with the remaining Gruyère and Parmesan cheese. Garnish with fresh parsley.

Notes

  • For the deepest onion flavor, do not rush the caramelization process; low and slow heat is key.
  • If you prefer a richer flavor, substitute half of the beef broth with dry white wine before adding the pasta.
  • You can skip the Gruyère and use all Parmesan for a sharper taste, or add a splash of Worcestershire sauce for extra savoriness.

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