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Just 10 minutes of prep time and you have a delicious creamy concoction of chicken, celery, and cheese topped with crispy fried onions!
If you think you don’t like casseroles, then you probably just haven’t tried the right one. We have several favorite chicken casseroles, like a chicken crescent roll casserole, chicken and broccoli casserole, and this French onion chicken casserole!
A casserole for even the pickiest eaters
I really don’t like being a picky eater, but I am. Yes, it’s true… I can’t stand onions. They gross me out. BUT, having said that I actually like french fried onions… maybe the fact they’re breaded and fried makes them okay. 😉
This next recipe I’m sharing is topped off with those delicious french fried onions and filled with all sorts of goodness like chicken, cheese, sour cream, mayo and almonds. It is DELICIOUS!
The best thing about this French Onion Chicken Casserole is that it takes little prep time. Literally, it takes minutes to throw together if your chicken is already made. You can buy cooked, chopped chicken, but I like to bake my chicken earlier in the morning.
10 minute prep
Although it takes awhile to bake, it really only takes about 5 minutes of prep work. Add that with the 5 minutes it takes to put this casserole together and you’re looking at about 10 minutes of work.
PREP. Preheat oven to 350 and coat a 9×13 baking dish with cooking spray.
BAKE. In large bowl, stir celery, cheese, sour cream, mayo and cream of chicken. Add chicken and almonds. Spoon into dish. Bake uncovered for 30 minutes.
TOPPING. Sprinkle fried onion and cook another 5 minutes. Let stand 5-10 minutes. Enjoy!
Tips + variations
Here are a few ideas to tweak the recipe to make it a little more healthy:
- Use a low fat Mayo and sour cream
- Substitute all or a portion of the Mayonnaise with a low fat Greek yogurt
- Add veggies—sliced carrots, peas, broccoli florets, and shredded zucchini are all good choices
- Make it even more keto friendly and sprinkle cooked chopped bacon bits on top
- Serve over white or brown rice, pasta, cauliflower rice, or zucchini pasta
Serve French onion chicken casserole with any of the following:
Storing info
To make ahead of time, assemble and cover with plastic wrap and store in the fridge for a day. If freezing, then add another layer of aluminum foil and freeze for 2-3 months. Thaw overnight in the fridge before baking. Do not add the fried onions until the last 5 minutes of baking time.
To STORE, divide the leftovers into single serve portions. Store the portions in airtight containers and keep in the fridge for days. To reheat quickly, use the microwave. If you have a little more time reheat in the oven.
The fried onions may become mushy as it sits in the fridge. To crisp them back up simply stick the casserole under the broiler. Watch carefully as they can go from soggy to burnt really quickly.
For more great chicken casseroles, check out:
- One Pan Chicken Parmesan
- Chicken and Green Bean Casserole
- Parmesan Chicken Bake
- Chicken Tetrazzini
- Chicken Cordon Bleu Casserole
- Chicken Stuffing Casserole
French Onion Chicken Casserole Recipe
Ingredients
- 3 cups cooked chicken chopped
- 1 cup celery chopped (or french style green beans)
- 1 cup cheddar cheese shredded
- 1 cup sour cream
- 1/2 cup mayo
- 1 can cream of chicken
- 1/2 cup slivered almonds
- 6 oz French’s fried onions
Instructions
- Preheat oven to 350 and coat a 9×13 baking dish with cooking spray.
- In a large bowl, stir celery, cheese, sour cream, mayo and cream of chicken. Add chicken and almonds. Spoon into dish.
- Bake uncovered for 30 minutes. Sprinkle fried onion and cook another 5 minutes. Let stand 5-10 minutes. Enjoy!
Video
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
Love this recipe! SO EASY TO PUT TOGETHER. i HAVE MADE THIS SEVERAL TIMES AND IT NEVER DISAPPOINTS!
I am so glad you think so 🙂 Thank you so much for letting me know!
we loved this! i serve it over egg noodles with a green veg. or salad. yum!!! thank you for another recipe for my rotation!
Just FINISHED eating this. A bit too much mayo. I Seasoned the CHICKEN with garlic powder, onion powder and paprika. The casserole i added frozen peas and carrots. I also seasoned the casserole with some dried paRsley and thyme. I will try this again and Reduce the mayo.
Thank you so much for trying it 🙂
I love this casserole! I sauteed portebello mushrooms in butter and white wine and used them instead of celery or green beans. It is really amazing. thank you!
Sounds yum! Thank you for sharing what you did!!
This recipe is a total Hit in my family!
I have made some tweaks that brings this casserole to the next level:
1) i always use Frozen cut greEn beans for an added “crunch”
2) i mix about half of the french onions into the casserole (a la green bean casserole)
3) at the end of cooking, i mix A cooked bag of egg noodles into the casserole and cook for five minutes on broil
Thanks for sharing what you did! Sounds great!
We tried this tonight with a few changes. We added
1 can cream of mushroom
Extra cup-2 cups chicken
Green beans instead of celery
Dashes of
garlic powder
Onion powder
Cayenne powder
Pepper
Salt
Hubby loves it and request it being part of a regular rotation
Thank you!
Sounds delicious! Thank you for sharing what you did!
Does this need a large or small can of cream of chicken?
It just needs the one that is around 10 ounces 🙂
This was so delicious. EVen my picky 13-year Old eater was going back for seconds.
I added BROCCOLI FLORETS and frozen peas, but left ouT the celery as i forgot to buy it.
Will definitely be making this again!
Great additions! I am glad your picky eater ate it! Thank you for sharing that!
Delicious! Just like green beAn CASSEROLE with chicken. DEFINITELY sub the celery With the green beans. Everybody loved it! Paired With a garlic baguette and steamed carrots.
Will make again!
Sounds yum, what you did!! Thanks for sharing!
My family thoroughly enjoyed this casserole. I placed fresh spinach on the dish before adding the chicken etc. Also added chopped onion and 2 chopped garlic cloves. I softened celery, onion, garlic with a little butter in Micro.
Thank you for sharing. I will definitely fix it again.
Sounds great!! Thank you for sharing what you did 🙂 I am glad your family liked it!