This delicious French Onion Chicken recipe is made with tender chicken, caramelized onions, a rich, savory sauce, and lots of gooey cheese. It transforms your favorite soup into a hearty, comfort food meal! 

Easy and Flavorful French Onion Chicken

French onion soup is one of my favorites. The combination of melty cheese, flavorful broth, and sweet caramelized onion is just delicious. But sometimes you need something that’s just a little more filling. The solution? This French onion chicken recipe! 

Tender chicken breast are smothered in an onion-filled sauce that replicates the taste of French onion soup broth. Then everything is topped with Gruyère cheese, what’s not to love? 

You get all the flavors of soup with the addition of chicken to keep you full. Plus, this easy chicken recipe comes together with simple ingredients in a single pan. Prepare it for a romantic date night, dinner for one (with leftovers to spare), or double the recipe to feed the whole family!  

Reader Favorite Comfort Food Chicken Recipes

French onion chicken ingredients

Recipe Ingredients

Boneless Skinless Chicken Breast: you can easily swap the chicken breast for thighs if you’d like.

Olive Oil: this helps sauté the onions and forms the base of the sauce. Choose a great-tasting olive oil that you love. 

Yellow Onions: I prefer the sweet flavor of yellow onions, but white onions will also work in a pinch.

Fresh Garlic: plenty of fresh garlic adds the perfect flavor to the sauce.

Chicken Broth: I like to use low-sodium chicken broth so that I can better control the amount of sodium in the dish. You could also swap veggie or beef broth if you prefer. 

Arrowroot Starch: this is a grain free thickening agent that’s similar to cornstarch. It helps thicken the sauce so that it coats each piece of chicken.

Gruyère Cheese: one of the best parts of this recipe is the gooey melty cheese on top. If you can’t find Gruyère cheese, Swiss cheese is a great substitute. 

onions caramelizing in skillet

How to Make This French Onion Chicken Recipe

Step One: Heat a large oven-safe braising pan with a lid over medium-high heat. Once hot, add 2 tablespoons of olive oil. 

Step Two: Liberally season both sides of the chicken breasts with salt and pepper. Then, add the chicken to the skillet, and cook for 4 to 5 minutes on each side until the chicken is golden and cooked through. It should reach an internal temperature of 165 degrees! 

Step Three: Remove the chicken from the pan, and reduce the heat to medium-low. Next, add the onions, and stir to coat them in the oil. Cover the pan with the lid, and let the onions cook for 20 to 30 minutes, stirring every 5 minutes or so until they’re golden brown. 

Step Four: Add in the garlic, and cook for 1 minute. Be careful not to burn! Sprinkle the arrowroot starch over the onions, and stir to combine. 

Step Five: Pour in the chicken broth, thyme, salt, and pepper. Stir until well combined. Then, increase the heat, and bring the sauce to a simmer. Let it simmer uncovered for 3 to 5 minutes or until it thickens slightly. Remove the pan from the heat. 

Step Six: Add the chicken breast back to the pan, and spoon the onions and sauce on top. Top each chicken breast with a generous amount of shredded Gruyère cheese. Then, place it under a broiler just until the cheese is melted. Top with fresh thyme, and serve! 

seared chicken in skillet

Side Dish Suggestions

I love to serve this French onion chicken recipe over mashed potatoes to soak up all the sauce. It’s also great with pasta, rice, or crispy smashed potatoes

If you want to add a side, try pairing it with a refreshing salad, brown butter maple roasted carrots, or roasted garlic lemon broccoli

chicken and onions in skillet

How to Store, Freeze, and Reheat

Store: store any leftovers in an airtight container in the fridge for up to 3-4 days. 

Freeze: let the French onion baked chicken cool completely. Then, transfer it to a freezer-safe container. Leftover chicken will stay fresh in the freezer for up to 3 months.

Reheat: to reheat leftovers, first let them thaw in the fridge overnight. Then, warm in the microwave or a skillet over medium heat until heated through. 

More Delicious Chicken Recipes

French onion chicken in skillet

I hope you give this French Onion Chicken a try! It is so easy to make and delicious! If you do give this recipe a try, let me know! Leave a comment with a star rating below. You can also snap a photo & tag @allthehealthythings on INSTAGRAM. Your reviews and ratings help support All the Healthy Things and make it possible for me to continue to create the recipes you trust and love.

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French onion chicken in skillet

French Onion Chicken

  • Author: Ashlea Carver
  • Prep Time: 15 minutes
  • Cook Time: 50 minutes
  • Total Time: 1 hour 5 minutes
  • Yield: 6-8 1x
  • Category: Dinner
  • Method: Stovetop
  • Cuisine: French Inspired
  • Diet: Gluten Free
  • Author: Ashlea Carver
  • Prep Time: 15 minutes
  • Cook Time: 50 minutes
  • Total Time: 1 hour 5 minutes
  • Yield: 6-8 1x
  • Category: Dinner
  • Method: Stovetop
  • Cuisine: French Inspired
  • Diet: Gluten Free

Ingredients

  • 2 pounds boneless skinless chicken breast, split in half lengthwise
  • 2 tablespoons olive oil, plus more as needed
  • 34 large yellow onions, sliced 1/4 inch thick
  • 4 cloves garlic, finely minced
  • 1 tablespoon arrowroot starch
  • 1 cup low-sodium chicken broth
  • 1/2 tablespoon fresh thyme
  • 1 teaspoon salt, plus more to taste
  • 1/4 teaspoon black pepper, plus more to tase
  • 8oz gruyere cheese, shredded

Method

  1. Heat a large oven safe braising pan with a lid to medium-high heat. Once hot add 2 tablespoons of olive oil.
  2. Liberally season both sides of the chicken breast with salt and pepper. Add the chicken breast to the skillet and cook for 4-5 minutes per side until golden cooked through.
  3. Remove the chicken from the pan and lower the heat to medium low. Add the onions to the pan and stir. Cover the pan and let the onions cook for 20-30 minutes, stirring every 5 minutes or so until the onions are golden brown.
  4. Once the onions are golden, add in the garlic and cook for 1 minute. Next, sprinkle the arrowroot starch over the onions and then stir until well combined.
  5. Pour in the chicken broth, thyme, salt, and pepper. Stir until well combined and then increase the heat and bring the sauce to a simmer. Let the sauce simmer for 3-5 minutes, uncovered, or until it has thickened slightly. Remove from the heat.
  6. Add the chicken breast back to the sauce and spoon the onions and sauce overtop of each chicken breast.
  7. Top each chicken breast with a generous amount of shredded gruyere cheese and then place under the broiler until the cheese is melted. Top with fresh thyme and serve.

Keywords:

french onion chicken recipe, french onion baked chicken, French onion chicken

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Recipe by: Ashlea Carver / All the Healthy Things | Photography by: Eat Love Eat

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4 Comments

  1. Christine says:

    This was delicious and very elegant considering how easy it was. We had it over mashed potatoes, and it was the perfect comfort meal for a rainy winter weekend.

  2. I just found your website. It is terrific and the recipes are delicious (I can tell by looking).

    I am going to make your French Onion Chicken and Crispy Smashed Potatoes for our Super Bowl eats.

    Thank you so much.

    Steve

  3. This was delicious and easy to make. I put it over orzo with a side of broccoli. Thank you for another great recipe.

  4. Made this for dinner tonight and it was so good! Had it with a side of roasted veggies and used beef broth instead of chicken since that’s what I had on hand. Love that this recipe doesn’t use a pre-made mix for all the flavor, it was so delicious! Thanks Ashlea!