Ingredients
Equipment
Method
- Heat the olive oil in a 12-inch deep skillet (at least 5 quarts) over medium-high heat.
- Add the ground beef, 1/2 teaspoon of the salt, and the pepper, and cook for 6–8 minutes, breaking it up, until browned and 160°F.
- Transfer the beef to a plate.
- Melt the butter in the skillet over medium heat.
- Add the onions and remaining 1/2 teaspoon salt, and cook for 25–30 minutes, stirring often, until deeply golden.
- Stir in the thyme and garlic and cook for 30 seconds, until fragrant.
- Stir in the beef broth, Worcestershire sauce, water, pasta, and cooked beef, scraping up the browned bits.
- Bring the mixture to a boil over high heat.
- Cover the skillet and reduce the heat to medium-low.
- Simmer for 12–15 minutes, stirring every 3–4 minutes, until the pasta is al dente and most of the liquid is absorbed.
- Remove the skillet from the heat.
- Stir in the heavy cream and Gruyère until the cheese melts.
- Let the pasta rest for 3 minutes before serving.
Notes
For the deepest onion flavor, cook the onions until deeply golden without rushing them. Refrigerate leftovers for up to 3 days; freezing is not recommended because the cream sauce may change texture. Use certified gluten-free pasta and verify the broth and Worcestershire sauce are gluten-free for a gluten-free variation.
