French Onion Chicken Casserole - A Cozy Comfort for the Holidays
Quick-Answer Summary Line: A creamy French onion chicken casserole perfect for holiday gatherings.
Format: Ready in: 1 hour · Serves: 6 · Technique: Baking · Storage: Up to 3 days in the fridge.
Quick Answer
This French Onion Chicken Casserole is a delicious blend of shredded chicken, creamy soup, and cheesy goodness, baked to perfection and perfect for sharing during the holidays.
As the chill of autumn settles over New York City and the vibrant leaves begin to transform into a tapestry of golds and reds, my kitchen becomes a haven - a warm refuge from the brisk air outside. With Thanksgiving and Christmas just around the corner, it's the perfect time to indulge in hearty, comforting dishes. One of my favorites is the French Onion Chicken Casserole. This creamy, mouthwatering delight encapsulates the essence of cozy family dinners, making it an ideal option for those holiday gatherings.
A Cozy Holiday Treat

Why You'll Love This Recipe
- Combines the comforting flavors of French onion soup with tender chicken for a hearty dish.
- Easy to prepare, making it perfect for busy holiday gatherings.
- Can be made ahead of time, allowing for more time spent with loved ones.
- Versatile and can be paired with various sides for a complete meal.
- Leftovers taste even better the next day!
Ingredients
This dish features simple yet flavorful ingredients that come together beautifully.
Chicken
- 2 cups cooked shredded chicken
Soup
- 2 cups French onion soup
Dairy
- 1 cup sour cream
- 1 cup shredded cheese
Optional
- 1 cup cooked rice (optional)
Seasonings
- Salt and pepper to taste
- Fresh parsley for garnishing
How to Make French Onion Chicken Casserole (Step-by-Step)
Follow these easy steps to create a warm and delicious casserole that will impress your family and friends.
Step 1: Preheat the Oven
Start by preheating your oven to 350°F (175°C). The warm oven will set the stage for a cozy dish that everyone will love.
Step 2: Combine Ingredients
In a large mixing bowl, combine the cooked shredded chicken, French onion soup, sour cream, and rice if you choose to use it. Mix until well blended, and enjoy the wonderful aroma that fills the air.
Step 3: Season the Mixture
Season with salt and pepper to taste, creating a personalized flavor profile that suits your palate.
Step 4: Prepare the Casserole Dish
Pour the mixture into a greased 9x13-inch casserole dish, spreading it evenly for consistent cooking.
Step 5: Add Cheese Topping
Generously top the casserole with shredded cheese. Picture that bubbly, golden layer, and let your imagination inspire a generous sprinkle.
Step 6: Bake
Place the casserole in the preheated oven and bake for about 25-30 minutes. Watch for a delightful golden-brown crust, while ensuring the center has just a slight jiggle when it's done.
Step 7: Garnish and Serve
After removing the casserole from the oven, garnish it with fresh parsley for a vibrant presentation and bright flavor before serving.

Common Mistakes to Avoid
- Using raw chicken instead of cooked: This casserole relies on pre-cooked chicken for the right texture and flavor.
- Skimping on seasoning: A little salt and pepper can go a long way; don't underestimate it!
- Not letting it rest: Give the casserole a few minutes to set before serving for easier slicing.
Tips and Tricks for Success
- For an extra layer of flavor, add sautéed onions or mushrooms to the mixture.
- If you're prepping for a gathering, you can assemble this a day ahead and simply bake it before serving.
- Pair this dish with a crisp green salad or roasted vegetables for a balanced meal.
- Experiment with different cheese blends for varied flavor profiles.
Variations
- Substitute sour cream with Greek yogurt for a tangy twist.
- Use quinoa or cauliflower rice instead of traditional rice for a healthier option.
- Add steamed broccoli or spinach into the mix for added nutrients.
How to Serve
- Serve with a side of crusty bread to soak up the creamy goodness.
- Top with extra fresh parsley or chives for a bright touch.
- Enjoy alongside a glass of your favorite white wine for a festive feel.
- Pair with my See also: Simple Garlic Roasted Green Beans for a delightful meal.

Make Ahead and Storage
- Make Ahead: Assemble the casserole a day in advance, cover it, and refrigerate until ready to bake.
- Storage: Store leftovers in an airtight container in the fridge for up to 3 days.
- Reheating: Reheat in the oven to retain texture, or use the microwave for convenience.
- Freezing: Casserole can be frozen before baking. Thaw overnight in the fridge before baking.
Recipe Notes / What I Learned
Using quality ingredients is essential for the best flavor, particularly with the French onion soup. Allowing the dish to rest after baking enhances the melding of flavors, making it even more comforting the next day.
Yield and Serving Size
Yield: 6 servings · Serving Size: 1 cup
Nutrition Snapshot
Estimated Nutrition Per Serving: ~350 calories · 25g protein · 30g carbs · 15g fat
Cozy French Onion Chicken Casserole for Holidays
Equipment
- Oven
- Mixing bowl
- Casserole dish
- Spatula
Ingredients
Group: Ingredients
- 2 cups cooked shredded chicken
- 2 cups French onion soup
- 1 cup sour cream
- 1 cup shredded cheese
- 1 cup cooked rice (optional)
- Salt and pepper to taste
- Fresh parsley for garnishing
Instructions
- Preheat your oven to 350°F (175°C).
- In a large mixing bowl, combine the cooked shredded chicken, French onion soup, sour cream, and rice if using. Mix until well blended.
- Season with salt and pepper to taste.
- Pour the mixture into a greased 9x13-inch casserole dish.
- Top the casserole generously with shredded cheese.
- Bake in the preheated oven for about 25-30 minutes until golden brown on top.
- Garnish with fresh parsley before serving.
Notes
FAQs
Can I use frozen chicken for this casserole?
It's best to use cooked chicken for this recipe to ensure the right texture and flavor. If you have frozen chicken, make sure to cook it through before adding it to the casserole.
What can I serve with the French Onion Chicken Casserole?
This dish pairs nicely with a crisp green salad or roasted vegetables to create a balanced meal.
How do I store leftovers?
Store leftovers in an airtight container in the fridge for up to 3 days. Reheating in the oven is recommended to maintain the creamy texture, though the microwave is also an option.





