If you love the rich, cozy flavors of French onion soup, this one-pan French onion chicken brings it all together in the easiest way. Tender shredded rotisserie (or pre-cooked) chicken, sweet caramelized onions, melty cheese, and baguette slices soak up the savory sauce. It’s hearty, cheesy, and perfect for a comforting family dinner with minimal cleanup!

Creamy chicken and onions topped with toasted bread and melted cheese being scooped up with a metal spoon.

5 star review

“My husband loves French onion soup. We made this together tonight. Super easy. Very flavorful. One pot. He loved it. It will be added to the rotation. ”

– Christine
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French Onion Chicken Casserole in One-Pan!

Say hello to my new love, this weeknight French onion chicken! This dish takes all the bold flavors of French onion soup and pairs them with tender, juicy chicken for a meal that’s both comforting and satisfying. Especially if you’ve ever felt like French onion soup is too complicated or time-consuming to make, you’ve gotta try this weeknight winner of a chicken dinner (take it from me, as I am all about these ultra simple chicken skillet dinners like my go-to apple chicken skillet).

I’m telling you, your family will love this skillet because it combines the comforting flavors of French onion soup with the protein-packed power of chicken. For this fresh take on a classic recipe, we’re doing a very quick caramelization of thinly sliced onions, adding balsamic vinegar, Worcestershire sauce, and a hint of brown sugar to build that signature depth.

To keep it simple and weeknight-friendly, I decided to use pre-cooked chicken so that it melts beautifully into the sauce, takes less time to cook, and avoids any potential for dry or overcooked chicken. Finally, a layer of baguette slices and a generous sprinkle of cheese make this skillet feel like a bubbling pot of French onion goodness straight out of the oven.

A loaf of French bread next to bowls of chicken, butter, cheese, broth, and seasonings on a table.
Ingredients You’ll Need: olive oil, butter, onion, salt, pepper, balsamic vinegar, Worcestershire sauce, brown sugar, thyme, beef stock, cream cheese, chicken, cheese, baguette.

Welcome to My Kitchen! Let’s Make French Onion Chicken

Jump to Recipe Instructions
Browned thinly sliced onions in a skillet on the stove.
Cook the onions until they’re caramelized.
A hand pouring balsamic vinegar into a skillet with caramelized onions and thyme.
Add balsamic, Worcestershire sauce, brown sugar, and thyme.
Broth being poured from a glass into a large skillet with caramelized onions and blocks of cream cheese.
Add stock and cream cheese. Stir until creamy.
Shredded chicken piled in a skillet of browned onions.
Add the chicken, stirring to combine.
Small baguette slices layered on top of a creamy chicken and onion mixture in a large skillet.
Place the baguette slices on top in an even layer.
A hand sprinkling shredded cheese onto French bread slices in a skillet.
Sprinkle with grated cheese & bake.

French Onion Chicken Tips for Ease!

  • I tested this recipe with Gruyère, since it’s the classic for French onion soup, but feel free to use Swiss, Jarlsberg, or even mozzarella for a melty topping.
  • I tried this one with sweet onions like Vidalia or Walla Walla, and it’s so good, but I recommend skipping the sugar in this case.
  • For perfect caramelization, keep the heat at medium-high and stir frequently to get those onions perfectly browned without burning. Add a splash of water if the pan starts to dry out.
A metal spoon sitting in a skillet filled with creamy chicken and onions, bread slices, and melted cheese.
Creamy chicken and onions topped with toasted bread and melted cheese being scooped up with a metal spoon.
5 stars (3 ratings)

French Onion Chicken Bake (1-Pan!)

Developed and tested by A woman with long blonde hair, smiling, holds and pours a bottle of oil in a modern kitchen setting.Robyn Conley Downs
Servings: 6 servings
Prep: 5 minutes
Cook: 45 minutes
Total: 49 minutes
If you love the rich, cozy flavors of French onion soup, this one-pan French onion chicken brings it all together in the easiest way. Tender shredded rotisserie (or pre-cooked) chicken, sweet caramelized onions, melty cheese, and toasty baguette slices soak up the savory sauce.
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Ingredients

  • 1 tablespoon olive oil
  • 1 tablespoon butter
  • 3 medium yellow onions, thinly sliced into half moons
  • ¾ teaspoons kosher salt, divided
  • ¼ teaspoon freshly ground black pepper
  • 1 tablespoon balsamic vinegar
  • 1 teaspoon Worcestershire sauce
  • 1 teaspoon brown sugar
  • 1 teaspoon dried thyme
  • 1 cup beef broth
  • 4 tablespoons cream cheese (about 2-oz)
  • 3 cups cooked shredded or diced chicken, such as from a rotisserie chicken

To Add at The End

  • 1 cup grated gruyere cheese, see notes
  • 1 medium French baguette (about 8-oz loaf), sliced into ½-inch rounds

Equipment

Instructions 

  • Heat the oven to 375F.
  • Heat a large, high-sided, oven-proof skillet over medium-high heat. Add the olive oil, butter, onions, ½ teaspoon salt and pepper, stirring to combine.
  • Cook until browned and caramelized, stirring frequently, about 10 minutes. If the onions are browning too quickly, turn the heat down to medium. If the pan starts to dry out, add a splash of water.
  • Once the onions are caramelized, add the balsamic vinegar, worcestershire sauce, brown sugar, and thyme. Cook for 1 minute, stirring frequently.
  • And add the stock and cream cheese. Stir until the cream cheese is fully incorporated into the sauce. Turn off the heat and add the chicken, stirring to combine. If the pan seems dry, add ¼ cup more chicken stock. You want the mixture to be loose, but not soup consistency.
  • Smooth the chicken onion mixture into an even layer, then place the baguette slices on top in an even layer. You want the slices to be as close together as possible without overlapping. Sprinkle the grated cheese over the top.
  • Cover tightly with foil and bake for 10-20 minutes, or until bubbling around the edges. Uncover and bake for an additional 5 minutes, or until golden. Allow to cool for 5 minutes, then serve.

Notes

  • Perfect caramelization: Keep the heat at medium-high and stir frequently to get those onions perfectly browned without burning. Add a splash of water if the pan starts to dry out.
  • Cheese options: Gruyère is classic, but feel free to use Swiss, Jarlsberg, or even mozzarella for a melty topping.
Course: dinner
Cuisine: French

Nutrition Information:

Serving: 1 (of 6), Calories: 420kcal, Carbohydrates: 28g, Protein: 30g, Fat: 21g, Saturated Fat: 9g, Polyunsaturated Fat: 2g, Monounsaturated Fat: 7g, Cholesterol: 91mg, Sodium: 784mg, Potassium: 412mg, Fiber: 2g, Sugar: 6g, Vitamin A: 434IU, Vitamin C: 4mg, Calcium: 306mg, Iron: 3mg
Nutrition disclaimer
Did you make this recipe?If you do, be sure to share it on Instagram and tag me at @realfoodwholelife so I can see!

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