One-Pot French Onion Chicken (Printable)

Hearty chicken and caramelized onion pasta cooked in one pot with melted cheese and fresh thyme.

# Ingredient List:

→ Proteins

01 - 2 large boneless, skinless chicken breasts (about 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

# Steps:

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. Transfer cooked chicken to a plate and set aside.
02 - In the same pot, add the remaining butter and sliced onions with a generous pinch of salt. Cook slowly over medium-low heat, stirring frequently, until onions are deeply caramelized and golden brown, approximately 20 to 25 minutes.
03 - Add minced garlic and thyme to the caramelized onions. Sauté for 1 minute until fragrant.
04 - Pour in the wine if using and scrape up any browned bits from the bottom of the pot. Allow the liquid to reduce by half, approximately 2 to 3 minutes.
05 - Return the cooked 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 pasta reaches al dente texture and most liquid has been absorbed, approximately 10 to 12 minutes.
07 - Stir in Gruyère and mozzarella cheese until fully melted and creamy. Season with additional salt and pepper if needed.
08 - Sprinkle Parmesan cheese over the top and, if desired, place under the oven broiler for 2 to 3 minutes until golden and bubbly.
09 - Transfer to serving bowls while hot and garnish with additional fresh thyme.

# Expert Advice:

01 -
  • Everything happens in one pot, so cleanup becomes almost an afterthought and you get to enjoy your meal instead.
  • The caramelized onions create this sweet, savory depth that makes people ask what your secret ingredient is.
  • It's elegant enough for guests but cozy enough to eat alone with a glass of wine on a quiet night.
02 -
  • Don't skip the slow caramelization of onions—rushing it by turning up the heat creates bitter flavors instead of the sweet, deep notes that define this dish.
  • Add the uncooked pasta directly to the pot with the broth; it will absorb liquid as it cooks and create a naturally creamy consistency without any cream needed.
03 -
  • Make sure your Dutch oven or skillet has a lid or you can cover it with foil, because trapping steam helps the pasta cook evenly and keeps the sauce from evaporating too quickly.
  • If your pasta still seems firm after 10 minutes, give it another 2 to 3 minutes rather than adding more liquid; it will continue absorbing broth and reach perfect tenderness.
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