Description

There’s nothing better than One Pot French Onion Pasta—a rich, caramelized onion sauce infused with garlic, herbs, and melty cheese, all tossed with tender pasta in a single pot. This dish brings the deep, savory flavors of classic French onion soup to a cozy, comforting pasta dish.

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Ingredients

Scale

For the Caramelized Onions:

2 tablespoons butter
1 tablespoon olive oil
2 large yellow onions, thinly sliced
½ teaspoon salt
½ teaspoon black pepper
½ teaspoon sugar (optional, to speed up caramelization)
2 cloves garlic, minced
1 teaspoon fresh thyme (or ½ teaspoon dried)

For the Pasta:

8 oz pasta (fettuccine, linguine, or rigatoni)
3 cups beef broth (or vegetable broth for a vegetarian version)
½ cup dry white wine (optional, for depth of flavor)
½ teaspoon Worcestershire sauce
½ cup grated Gruyère cheese (or Swiss cheese)
¼ cup grated Parmesan cheese
½ cup heavy cream (optional, for extra creaminess)

For Topping:

Extra Gruyère or Parmesan
Fresh thyme or chopped parsley

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Instructions

Step 1: Caramelize the Onions

Heat butter and olive oil in a large pot over medium-low heat.
Add sliced onions, salt, black pepper, and sugar (if using). Cook for 20-25 minutes, stirring occasionally, until onions are deeply golden and caramelized.
Stir in garlic and thyme; cook for 1 more minute.

Step 2: Simmer the Pasta

Pour in white wine (if using) and cook for 2 minutes, scraping up any browned bits.
Add beef broth, Worcestershire sauce, and pasta. Stir well and bring to a gentle simmer.
Cover and cook for 10-12 minutes, stirring occasionally, until pasta is tender and most of the liquid is absorbed.

Step 3: Make It Creamy & Cheesy

Stir in Gruyère, Parmesan, and heavy cream (if using).
Continue stirring until the cheese melts and the sauce is creamy.

Step 4: Serve & Enjoy!

Sprinkle with extra cheese and fresh thyme before serving.
Serve warm and enjoy!

Notes

Be Patient with the Onions – Caramelizing them slowly gives the best flavor.
For Extra Flavor – Add a splash of balsamic vinegar or a pinch of red pepper flakes.
Make It Heartier – Stir in sautéed mushrooms or shredded chicken.
Use Good Cheese – Gruyère adds the best melty, nutty flavor.

Prep Time: 10 minutes
Cook Time: 30 minutes
Cuisine: American