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French Onion Chicken Bake

This French Onion Chicken Bake is a quick and easy baked chicken recipe for fellow french onion soup lovers, complete with caramelized onions and a blend of two cheeses.

chicken onions and cheese in a casserole dish with text

French Onion Chicken Bake

Those that love my Easy French Onion Soup recipe will fall head over heals in love with this easy baked chicken dish.

I love simple chicken dinners, especially when it’s in casserole form like my Chicken Stuffing Bake. Not only are they a true comfort food, but chicken casseroles like these fit so well into chaotic daily life.

One might think this would be the ideal recipe for fall, and it is. Yet I made this recently, on a cool rainy summer day – and it was just the recipe to combat the gloominess.

chicken recipe is a dish on a table

This french onion smothered chicken recipe produces tender and juicy chicken breasts topped with caramelized onions and glorious melted mozzarella and parmesan cheese.

It’s a taste that is really distinct and flavourful. Best of all, you can serve this with pretty much any side dish like salad, Honey Glazed Carrots, and Oven Roasted Red Potatoes.

Since this is a perfect keto or low carb chicken dish, you can also serve alongside Roasted Garlic Cauliflower Mash!

chicken with cheese and onion in a dish with a wooden spoon

Baked French Onion Chicken Ingredients:

  • Onions
  • Butter
  • Garlic
  • Pepper
  • Low Sodium Beef Broth
  • Balsamic Vinegar
  • Chicken Breasts, halved diagonally if thick
  • Salt
  • Thyme
  • Mozzarella Cheese
  • Parmesean Cheese
baked chicken lifted up on a wooden spoon in a dish

How to Caramelize Onions:

This French Onion Baked Chicken recipe includes a topping of beautiful caramelized onions. It really makes the recipe, and ordinary sliced onions will not be the same. Here’s how to make them great:

  • Sauté Onions In Butter Until Transparent and Soft: This first step is essential. Once they are soft, transparent and start to brown a little, they are done.
  • Add Beef Broth and Balsamic Vinegar: This not only adds flavour but also stops the onions from drying out while they cook.
  • Garlic and Spices: More flavour is infused while the onions take on a sweet, jam-like consistency. Make sure to scrape up any of those browned bits from the onions when you stir.
baked chicken piece on a dish with salad

For More Chicken Recipes

french onion chicken in dishes with text overlay
baked chicken lifted up on a wooden spoon in a dish

French Onion Chicken Bake

Yield: 1
Prep Time: 10 minutes
Cook Time: 50 minutes
Total Time: 1 hour

French Onion Chicken Bake is a quick and easy baked chicken recipe for fellow french onion soup lovers, complete with caramelized onions and a blend of two cheeses.


  • 4 Onions, peeled and sliced
  • 4 tbsp Butter
  • 4 cloves Garlic, minced
  • 1/2 tsp Pepper
  • 1 tsp Thyme
  • 2/3 cup Low Sodium Beef Broth
  • 2 tbsp Balsamic Vinegar
  • 4 Chicken Breasts, boneless skinless
  • 1/2 tsp Salt
  • 1 cup Mozzarella Cheese, shredded
  • 1/2 cup Parmesean Cheese, shredded


  1. Preheat the oven to 400 degrees and spray a baking dish with cooking spray
  2. Add butter to a large skillet on med to high heat. Add in sliced onions and cook for 5 minutes, stirring occasionally.
  3. Reduce the heat on the pan to medium and add in the garlic, pepper and thyme and cook for another minute
  4. Stir in the beef broth and the balsamic vinegar and cook until the onions have a jam-like consistency, about 10 minutes.
  5. When onions are caramelized, place about 1/3 of the mixture into the bottom of the greased baking dish.
  6. Place chicken on top of the onions and sprinkle with the salt.
  7. Place remaining onions on top of the chicken along with the mozzarella and parmesan cheeses.
  8. Bake for 30 minutes or until the chicken has a safe internal temperature of 165 degrees.
  9. Serve warm and enjoy!


  • - If your chicken breasts are thick, cut in half diagonally. Make sure all are about the same size.
  • - Add in more of the spices if desired

Nutrition Information:
Yield: 4 Serving Size: 1
Amount Per Serving: Calories: 492Total Fat: 26gSaturated Fat: 14gTrans Fat: 1gUnsaturated Fat: 9gCholesterol: 165mgSodium: 960mgCarbohydrates: 15gFiber: 1gSugar: 6gProtein: 49g

Did you make this recipe?

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  1. I just made this and it is yummy. It smells like onion soup in the house! Feels like autumn is there already… I roasted vetetables on a sheet pan with this. Simple to make and yet, very healthy and comforting. Thank you very much for this great idea. The bf loved it as well. 🙂

  2. Just made this recipe as written. My family absolutely loved this meal!!!! It tasted amazing especially on this beautiful Fall day🎃. Thanks for sharing this great recipe. It’s a keeper!

    1. Second time in the making. I can get my chicken hateing family to eat this delicious recipe! Thank you.

  3. This was a BIG Hit tonight! My husband isn’t a onion fan so I was a little leery serving it. Turns out he Loved It & my 2yr old son did also! I only had 2 chicken breasts so I used 3 onions instead of 4 & I didn’t have shredded Parmesan so I used a little extra mozzarella & poured some Kraft Parmesan in. Thanks, this will be on rotation now!

  4. Amazeing way to prepare chicken.. i had this at The Olde Hide House in Acton Ontario
    Tried to duplicate it but used orange juice and soya sauce for that little of tart. Never thought to use balsamic vinegar glad i found this recipe

  5. I made this but substituted a few things based on my health restrictions. Used boneless chicken thighs, glazed balsamic vinegar, poultry seasoning and vegan cheese. It smells so good! We enjoyed it too.

  6. My husband and I just finished eating this recipe and we both LOVED it. He said that this chicken recipe is one of the best I’ve made. Deff making this again. Thank you for sharing.

  7. My husband and I absolutely love this meal. However, this recipe is like three meals for us. Can I freeze any of this recipe for a later date so we are not eating this 3 days in a row?

    1. I would totally make it, cooking and all – and then freeze. Make sure to thaw completely before reheating. Let me know how it turns out!

  8. I sometimes use half olive oil and half butter and it works just fine although I haven’t tried it for this recipe.

  9. Always read the reviews first, so I truly can’t wait to make this but first have a question. Why do yuh use Beef Broth in a Chicken recipe. Why wouldn’t you use Chicken STOCK. Just curious, I still want to try this, but wanted to know why you used what you did.

    Thank, Jan

  10. Sounds like great recipes. Just had both knees surgery so not doing a whole lot cooking yet.

  11. Off to market to get ingredients to make tonight. I know my guys will love this. Thanks so much. I needed a new recipe for Chicken breasts.

  12. This recipe is absolutely delicious, made exactly recipe, served it with cauliflower mash and carrots, sooooo good, will definitely make it again, thanks

  13. OMG sooo delicious!!!! I was a little apprehensive about the recipe, but boy I was wrong. This will most definitely be added to the rotation. Thank you so much for a tasty and simple recipe. A+++

  14. Easy to make.
    Wonderful flavor.
    I did not have Balsamic Vinegar so I found a substitution online.
    2 Tablespoons Red Wine Vinegar mixed with 1 teaspoon sugar..
    Worked well.
    Definitely a keeper !.

  15. Have you tried it with provolone cheese sprinkled with paprika? I think that would make it more like French onion soup

  16. I was looking for a good broccoli rice side dish and stumbled upon this recipe. Made it exactly as stated but without the chicken. Used a 9×13 but should have used maybe a 9×9. Anyway it was fabulous! Will definitely make again.

  17. Thank you for this recipe! Totally delicious. My son and husband ate two servings and kept commenting how delicious it was. This is a winner. The chicken was so tender. Used a 7 combination of a package of white Italian cheeses and shaved Parmesan.

  18. Good morning! Could this be assembled earlier in the day and then baked just before serving? I’d like to make this when we have friends over, but don’t want to be in the kitchen cooking while they’re here 😊

  19. My husband found this recipe and we decided to try. Like someone said, I thought “why beef broth and not chicken”. It’s like making French onion soup and adding to the chicken. Excellent. We used all shredded gruyere and it was delicious. We really didn’t want an Italian cheese spin on it. I think next time I will put a layer of sliced small potatoes in the bottom of the pan. Thanks for this new idea for chicken!

  20. A fabulous recipe that was unbelievable tasty. Chicken was so moist!. We halved the recipe as there were only the 2 of us. AMAZING!

  21. I made this last night. It really is good! The beef broth is necessary for the French Onion Soup flavor. I had a leftover leek and 3 shallots and just added them to the onions. The only thing we will change next time is cutting down the amount of thyme. It is definitely needed for the flavor but it seemed to overpower the subtle yumminess of the caramelized onions. Will definitely make it again!

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