French Onion Chicken Casserole is one of those easy dinners that feels like comfort food from the very first bite.
It’s creamy, cheesy, and topped with crispy fried onions that turn golden in the oven.
On busy nights, there’s nothing better than mixing a few simple ingredients and letting the oven do the work.
As it bakes, the kitchen fills with the warm smell of onions, melted cheese, and savory chicken.
Using rotisserie chicken keeps the prep quick and effortless.
The French onion dip and creamy soup create a rich sauce that coats every bite.
With just five ingredients, this casserole is simple enough for weeknights but satisfying enough for the whole family.
Make it once, and it’s the kind of recipe that quickly earns a spot in your regular dinner rotation.
For French Onion Chicken Casserole
- Cooked Chicken – you’ll need about 4 cups of chopped cooked chicken. Rotisserie chicken works great here and makes the prep quick and easy.
- Shredded Cheddar Cheese – adds a rich, melty layer of flavor to the casserole and pairs perfectly with the onion dip.
- Sour Cream French Onion Dip – this is what gives the dish its signature onion flavor and creamy texture. Use a refrigerated sour cream–based dip for the best results.
- Cream of Chicken Soup – creates the creamy base that holds everything together and keeps the casserole moist while it bakes.
- French Fried Onions – sprinkled on top before baking, they become crispy and golden and add the perfect crunchy finish.
Easy Creamy French Onion Chicken Casserole
Notes
Ingredients
- 4 cups cooked chopped chicken
- 1 cup shredded cheddar cheese
- 1 cup refrigerated sour cream French Onion Dip
- 1 (10.5-oz) can Unsalted Cream of Chicken Soup
- 1 (2.8-oz) can French fried onions
Instructions
- Heat the oven to 350°F and lightly coat a 9×9-inch baking dish with cooking spray.
- In a mixing bowl, stir together the chicken, shredded cheddar cheese, sour cream French onion dip, and cream of chicken soup until well combined. Transfer the mixture to the prepared baking dish and spread it evenly.
- Scatter the French fried onions over the top of the chicken mixture.
- Place the dish in the oven and bake uncovered for 30 to 40 minutes, until hot and bubbly.
- This recipe works best with a refrigerated sour cream–based French onion dip rather than powdered onion dip mix. Brands such as Kraft, Barber’s, Dean’s, or Heluva Good are suitable options.
- Rotisserie chicken is a convenient shortcut and saves time when preparing this casserole.
- If sour cream onion dip is unavailable, you can use sour cream combined with onion soup mix as a substitute.
- Using unsalted cream of chicken soup helps manage the overall salt level of the dish.
- The casserole can be assembled in advance and refrigerated overnight. If baking straight from the refrigerator, add a few extra minutes to the cooking time.
- You may also freeze the casserole before baking. Thaw it completely before baking and then cook as directed.
- A fully baked casserole can also be frozen. To reheat, thaw the dish, cover it with aluminum foil, and warm it in a 350°F oven for 30 to 45 minutes, or until heated through.
Calories: 339 kcal | Carbohydrates: 10 g | Protein: 30 g | Fat: 18 g | Saturated Fat: 8 g | Cholesterol: 85 mg | Sodium: 705 mg | Potassium: 450 mg | Fiber: 1 g | Sugar: 1 g | Vitamin A: 600 IU | Vitamin C: 2 mg | Calcium: 200 mg | Iron: 1 mg
1. Can I use rotisserie chicken?
Absolutely! In fact, rotisserie chicken is perfect for this recipe. It’s already cooked and packed with flavor, so all you need to do is chop or shred it and mix it in. Great shortcut for busy nights.
2. Can I make this casserole ahead of time?
Yes, you can assemble the whole casserole earlier in the day and keep it in the fridge until you’re ready to bake. If baking straight from the refrigerator, you may need to add a few extra minutes to the cooking time.
3. What can I use instead of French onion dip?
If you can’t find refrigerated French onion dip, you can easily make a substitute. Just mix sour cream with a little onion soup mix. It gives a similar creamy texture and onion flavor.
4. How do I keep the fried onions crispy?
For the best crunch, sprinkle the fried onions on top right before baking. If you like them extra crispy, you can even add a small handful during the last few minutes of baking.
5. How do I store and reheat leftovers?
Leftovers keep well in the refrigerator for about 3 to 4 days. Reheat portions in the microwave, or warm the casserole in the oven at 350°F until heated through.
