One-Pot French Onion Chicken (Printable)

Tender chicken simmered with caramelized onions and cheeses in a cozy one-pot pasta dish.

# What You Need:

→ Proteins

01 - 2 large boneless, skinless chicken breasts (approximately 1.1 lbs), cut into bite-sized pieces

→ Vegetables

02 - 3 large yellow onions, thinly sliced
03 - 3 cloves garlic, minced
04 - 2 tablespoons fresh thyme leaves or 1 teaspoon dried thyme

→ Pasta

05 - 12 oz short pasta such as penne, fusilli, or rigatoni

→ Broth & Liquids

06 - 3 tablespoons unsalted butter
07 - 2 tablespoons olive oil
08 - 4 cups low-sodium beef or chicken broth
09 - 1/2 cup dry white wine, optional or substitute with additional broth
10 - Salt and freshly ground black pepper to taste

→ Cheese

11 - 1 cup Gruyère cheese, shredded
12 - 1/2 cup mozzarella cheese, shredded
13 - 2 tablespoons grated Parmesan cheese

# Directions:

01 - Heat olive oil and 1 tablespoon butter in a large Dutch oven or deep skillet over medium heat. Add chicken pieces, season with salt and pepper, and cook until golden and cooked through, approximately 6 to 8 minutes. Remove chicken and set aside.
02 - In the same pot, add the remaining butter. Add sliced onions and a generous pinch of salt. Cook slowly over medium-low heat, stirring often, until onions are deeply caramelized and golden brown, approximately 20 to 25 minutes.
03 - Add minced garlic and thyme, then sauté for 1 minute until fragrant.
04 - Pour in the white wine if using and scrape up any browned bits from the bottom of the pot. Allow it to reduce by half, approximately 2 to 3 minutes.
05 - Return the reserved chicken to the pot. Add the uncooked pasta and broth. Bring to a boil, then reduce heat to a simmer.
06 - Cover and cook, stirring occasionally, until the pasta reaches al dente texture and most liquid has been absorbed, approximately 10 to 12 minutes.
07 - Stir in Gruyère and mozzarella cheese until melted and creamy. Season with additional salt and pepper as needed.
08 - Sprinkle with Parmesan cheese and, if desired, broil under the oven for 2 to 3 minutes until golden and bubbly.
09 - Serve hot, garnished with fresh thyme.

# Expert Advice:

01 -
  • Everything cooks in one pot, which means fewer dishes to wash and more time enjoying what you made.
  • The caramelized onions add this deep, sweet richness that transforms simple pasta into something restaurant-worthy.
  • Melted Gruyère and mozzarella create a creamy sauce without cream, so it feels indulgent but not heavy.
02 -
  • Don't skip the low-and-slow onion caramelization—rushing it will give you cooked onions instead of the sweet, complex base this dish needs.
  • Use low-sodium broth because the cheese adds plenty of salt on its own, and you can always season at the end but can't unsalt what's already in the pot.
03 -
  • Don't crowd the pan when searing the chicken—give it space so it browns instead of steams, and you can always do it in batches.
  • The wine isn't optional if you want that signature depth of flavor; even a modest white wine adds an acidity that balances the cheese and sweetness beautifully.
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