French Onion Chicken Bake

French Onion Chicken Bake: A Flavorful Fusion of Classic Comfort Foods

Are you ready to tantalize your taste buds with a dish that combines the rich flavors of French onion soup with tender, juicy chicken? Look no further than this irresistible French Onion Chicken Bake recipe! With its caramelized onions, savory broth, and gooey cheese topping, this dish is a true crowd-pleaser that will have everyone coming back for seconds. Whether you’re cooking for a family dinner or hosting a dinner party, this recipe is sure to impress. So, let’s dive into the details and discover how to create this delicious fusion of flavors!


  • 4 Sliced Onions, peeled
  • 4 tbsp of Unsalted Butter
  • 4 Garlic Cloves, finely chopped
  • 1/2 tsp of Black Pepper
  • 1 tsp of Fresh Thyme
  • 2/3 cup of Beef Broth, low sodium
  • 2 tbsp of Aged Balsamic Vinegar
  • 4 Boneless Skinless Chicken Breasts
  • 1/2 tsp of Sea Salt
  • 1 cup of Shredded Mozzarella
  • 1/2 cup of Grated Parmesan


1. Caramelize the Onions:

  • In a large skillet, melt the unsalted butter over medium heat.
  • Add the sliced onions to the skillet and cook, stirring occasionally, until they are soft and caramelized, about 20-25 minutes.
  • Stir in the finely chopped garlic, black pepper, and fresh thyme, and cook for an additional 2-3 minutes.

2. Deglaze the Pan:

  • Pour the low-sodium beef broth and aged balsamic vinegar into the skillet, scraping up any browned bits from the bottom of the pan.
  • Cook for another 5-7 minutes, or until the liquid has reduced slightly and the flavors have melded together.

3. Prepare the Chicken:

  • Preheat your oven to 375°F (190°C).
  • Season the boneless skinless chicken breasts with sea salt and place them in a greased baking dish.

4. Assemble the Dish:

  • Spoon the caramelized onion mixture over the chicken breasts, ensuring that each breast is evenly coated.
  • Sprinkle the shredded mozzarella and grated Parmesan cheese over the top of the chicken and onions, creating a generous layer of cheesy goodness.

5. Bake to Perfection:

  • Cover the baking dish with aluminum foil and bake in the preheated oven for 25-30 minutes.
  • Remove the foil and continue baking for an additional 10-15 minutes, or until the chicken is cooked through and the cheese is golden and bubbly.

6. Serve and Enjoy:

  • Once cooked, remove the French Onion Chicken Bake from the oven and let it cool for a few minutes.
  • Garnish with additional fresh thyme or chopped parsley, if desired, before serving.
  • Slice the chicken breasts and serve them hot, alongside a generous portion of the caramelized onions and melted cheese.

Cook’s Notes and Variations:

Enhance your French Onion Chicken Bake with these tips and variations:

  • Add Wine: Deglaze the pan with a splash of dry white wine for added depth of flavor.
  • Use Gruyère Cheese: For a more traditional French onion soup flavor, substitute Gruyère cheese for the mozzarella and Parmesan.
  • Add Mushrooms: Saute sliced mushrooms with the onions for an earthy twist on this classic dish.

Keto and Low-Carb Versions:

Indulge in a keto-friendly or low-carb version of this French Onion Chicken Bake with these adaptations:

Keto Version:

  • Low-Carb Sweetener: Replace the aged balsamic vinegar with a sugar-free balsamic glaze made with a keto-friendly sweetener.
  • Almond Flour Crust: Create a crunchy crust by coating the chicken breasts in seasoned almond flour before topping with the caramelized onions and cheese.
  • Cauliflower Rice: Serve the French Onion Chicken Bake over a bed of cauliflower rice instead of traditional rice or pasta to keep the carb count low.

Low-Carb Version:

  • Zucchini Noodles: Swap out the pasta for spiralized zucchini noodles for a low-carb alternative that’s just as satisfying.
  • Reduce Onions: Use fewer onions or substitute with lower-carb vegetables such as bell peppers or celery to reduce the overall carb content.
  • Lighten Up the Cheese: Use reduced-fat mozzarella and Parmesan cheese to lower the calorie and fat content without sacrificing flavor.

In conclusion, French Onion Chicken Bake is a deliciously comforting dish that brings together the best of French onion soup and juicy chicken breasts. With its rich flavors, caramelized onions, and melty cheese topping, it’s a surefire way to please your taste buds and impress your dinner guests. Whether you’re following a keto, low-carb, or traditional diet, this versatile recipe can be customized to suit your needs and preferences. So, why wait? Give this mouthwatering dish a try and elevate your next meal to new heights of flavor and satisfaction!

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