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 classic french onion soup, such as 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. It was just the recipe to combat the gloominess.

chicken recipe is a dish on a table

This french onion smothered chicken recipe produces juicy and tender chicken breasts topped with caramelized onions.

Then glorious melted cheese is a blanket, both mozzarella and parmesan cheese.

It’s a taste that is really distinct and flavourful, it’s a favorite recipe. 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 these juicy chicken breasts alongside Roasted Garlic Cauliflower Mash. It’s a good choice.

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

Baked French Onion Chicken Ingredients:

Here are the simple ingredients to make this french onion chicken recipe. The full detailed instruction are below in the printable recipe card.

  • Large Sweet Onions, or just yellow onions
  • Butter
  • Garlic
  • Black Pepper
  • Low Sodium Beef Broth
  • Balsamic Vinegar
  • boneless skinless chicken breasts
  • Salt
  • Thyme
  • Mozzarella Cheese, or light mozzarella (try some gruyere cheese if you wish)
  • Parmesan Cheese

How to Make French Onion Chicken Casserole:

Preheat the oven to 400 degrees and spray a baking dish with cooking spray. Add butter to a large skillet on medium heat to medium-high heat.

Add sliced onions to melt butter, and cook for 5 minutes, stirring occasionally.

Reduce the heat on the pan to medium and add in the garlic, pepper and thyme and cook for another minute.

Stir in the beef broth and the balsamic vinegar and cook until the onions have a jam-like consistency, about 10 minutes.

When onions are caramelized, place about 1/3 of the mixture into the bottom of the greased baking dish. Place your large chicken breast on top of the onions and sprinkle with a little bit of salt.

If you have a favourite seasoning, feel free to lightly season chicken breasts at this time.

Place remaining onion slices on top of the whole chicken breasts along with the mozzarella and parmesan cheeses.

Bake for a cook time of 30 minutes or until the chicken has a safe internal temperature of 165 degrees and the top is golden brown.

Serve warm, the entire family will enjoy this chicken dinner with a french onion flavor!

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 sweet caramelized onion.

The buttery caramelized onions 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. In a pinch you can use chicken broth yet I’d prefer using beef.
  • 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.

What to Serve with French Onion Chicken:

This easy dinner recipe has a taste that is really distinct and flavourful, the best french onion soup flavor.

Best of all, you can serve this with pretty much any side dish like a tossed green salad, Glazed Carrots, and Oven Roasted Potatoes.

To align with this keto chicken dish, try this Roasted Garlic Cauliflower Mash or cauliflower rice.

These Roasted Parmesan Green Beans are so good with this chicken recipe. Yet this is a great recipe to pair these Baking Powder Biscuits with. Of course this chicken dish is wonderful with white wine to drink.

baked chicken piece on a dish with salad

To Store: Place chicken leftovers into an airtight container or cover with plastic wrap, and refrigerate for up to 5 days. I like to reheat in a microwave-safe container, yet you can also bake in the oven to reheat completely.

I hope your entire family loves this recipe as much as we do. It’s become a favorite meal for those busy weeknights. It’s so good you’d never know it was a low carb recipe.

A comforting meal that is so good yet not heavy with carbs are the best recipes!

The best part aside from the incredible and classic flavors of french onion soup, is how good it is for you. The end result is sure to impress!

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.

Ingredients

  • 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

Instructions

  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!

Notes

  • - 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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66 Comments

  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

        1. I don’t yet if the top is getting too crispy you can place some foil over top. It all depends on where your rack placement is.

  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 !.

    1. Never thought of that. I had only apple cider vinegar and a bit soya sauce will let you know how it turned out

  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!

  22. I made this tonight and it was delicious! The chicken was so tender and flavorful. I sprinkled some poultry seasoning on the chicken before topping with the onions and cheese and I didn’t salt as figured the broth was adding enough salt. I love French onion soup and this recipe is a keeper . Thank you for sharing!

  23. OMG! This is DELICIOUS!!! ?? Hubby called it a grand slam & wants it in regular rotation! I added a dash of red wine, dash of Worcestershire sauce and served it w/rice & fresh green beans. Yum! (I also had some wedges of Laughing Cow light Swiss/garlic cheese, and added those in place of some of the mozzarella.)

  24. I have had this pinned for quite sometime. Wishing now I had made it sooner. This was a delicious meal. The only thing did different was I used chicken bouillon vs beef, per the recipe. This recipe will definitely be going on my rotation. When the hubby and daughter devour a meal, it is a definite must for the rotation. Thank you so much, Tammi, for the great recipe.

  25. I carmelized the onions for an extra 20 minutes at the beginning to really get that rich French onion flavor and added extra cheese at the end (Can you ever have too much cheese?) but other than that I followed the recipe as written. It was out of this world! My whole family devoured it. Will definitely be making again

  26. Thank you so much for sharing this great recipe! My ma’s an *extremely* picky eater with some dietary restrictions and it makes finding recipes she’ll enjoy incredibly difficult. I made this and managed to persuade her to try a little before she headed out to work. Before she was even able to get out her rare positive review – I already knew from the look on her face it was a hit! Thank you, thank you, thank you! ❤

  27. Never seen a site like this. Can’t see all the ingredients!! I don’t have time for this

  28. I made this tonight and it was INCREDIBLE. I’m already thinking of the guests I want to make this for soon! My husband sounded like Bill Murray in “What about Bob” while eating it ?

  29. Wow! I made this last night. Fairly easy recipe with ingredients that I keep in my kitchen. I used boneless, skinless, chicken thighs. This was delicious. My husband was “wowed” too! Thanks for giving us a great way to prepare chicken.

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