French Onion Chicken Rice Casserole

If you’re looking for the ultimate comfort food casserole, look no further than this French Onion Chicken Rice Casserole. It combines tender shredded chicken, fluffy white rice, creamy soups, melty cheese, and that irresistible crispy French-fried onion topping for a hearty dish that warms you from the inside out.

This dish is quick to prep, budget-friendly, and always a hit—whether you’re cooking for your family on a busy weeknight or taking a dish to a potluck gathering. With just a few pantry staples and some rotisserie chicken, you can have dinner in the oven in minutes.

💛 Why You’ll Love This Recipe

✅ Minimal prep – just mix and bake!

✅ One dish = less cleanup

✅ Kid-friendly, freezer-friendly, and crowd-pleasing

✅ Perfect use for leftover or rotisserie chicken

✅ Ultra-comforting with creamy, cheesy flavor

This casserole is cozy, creamy, crunchy on top, and just the right amount of savory—all the things a good baked dish should be.

🛒 Ingredients

Here’s what you’ll need to make this creamy casserole magic:

2 cups cooked white rice (leftover or fresh)

2 cups cooked, shredded chicken (rotisserie chicken works perfectly)

1 (10.5 oz) can cream of chicken soup

1 (10.5 oz) can French onion soup

1 cup shredded mozzarella or Swiss cheese

1 cup French-fried onions, plus extra for topping

Salt & pepper, to taste

Chopped parsley, for garnish (optional)

Optional add-ins: sautéed mushrooms, diced green beans, or frozen peas for extra veggies.

⏱️ Time & Yield

• Prep Time: 10 minutes
• Bake Time: 25–30 minutes
• Total Time: 40 minutes
• Servings: 6–8
• Calories: ~450 per serving

🍳 Equipment You’ll Need

Mixing bowl

9×13-inch casserole dish

Measuring cups/spoons

Spoon or spatula

Oven mitts

Foil (optional, for covering)

👩‍🍳 How to Make French Onion Chicken Rice Casserole

1. Preheat Oven

Preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch casserole dish with cooking spray or a bit of butter.

2. Mix the Ingredients

In a large mixing bowl, combine:

2 cups cooked rice

2 cups shredded chicken

1 can cream of chicken soup

1 can French onion soup

1 cup shredded cheese

1 cup French-fried onions

Stir everything together until evenly mixed. Season with salt and pepper to taste.

3. Transfer to Baking Dish

Pour the mixture into your prepared casserole dish and spread evenly with a spatula.

4. Top and Bake

Sprinkle a generous layer of French-fried onions over the top.

Bake uncovered for 25–30 minutes, or until hot and bubbly, and the top is golden brown.

Tip: If the top starts to brown too quickly, cover loosely with foil for the last 10 minutes of baking.

5. Garnish and Serve

Remove from oven and let cool for 5–10 minutes before serving. Garnish with chopped parsley for a pop of color.

🧂 Tips + Tricks for Recipe Success

Use rotisserie chicken for a time-saving shortcut

Make it ahead – assemble earlier in the day and refrigerate until ready to bake

Add veggies like green beans or broccoli for a balanced meal

Use brown rice or wild rice for a more wholesome twist

Cheese matters – try Swiss or Gruyère for a deeper French onion flavor

Make it gluten-free by using gluten-free soups and fried onions

🧊 Storage & Reheating

To Store:

Cool completely, then store in an airtight container in the fridge for up to 4 days.

To Freeze:

Wrap the entire casserole tightly in plastic wrap and foil, or freeze individual portions. Freeze for up to 3 months.

To Reheat:

Oven: Cover with foil and reheat at 350°F for 15–20 minutes

Microwave: Heat individual servings in 1-minute intervals until hot

Add extra cheese or fried onions on top when reheating for fresh flavor!

🥗 What to Serve with This Casserole

This casserole is hearty enough on its own, but if you’d like to build out your meal, here are some great sides:

Steamed or roasted green beans

Mixed garden salad with vinaigrette

Buttery rolls or garlic bread

Roasted carrots or Brussels sprouts

Cranberry sauce or pickled veggies for a tangy contrast

🔁 Variations to Try

🧀 Extra Cheesy Casserole

Mix in ½ cup of sour cream and extra shredded cheese for even more creamy goodness.

🥦 Veggie-Packed

Add chopped broccoli or spinach to make it a one-dish dinner with built-in veggies.

🌶️ Spicy Kick

Add a pinch of crushed red pepper flakes or a few dashes of hot sauce.

🥓 Bacon Boost

Stir in chopped cooked bacon for a smoky twist.

❤️ Final Thoughts

This French Onion Chicken Rice Casserole is the perfect combination of creamy, crunchy, and comforting. It’s one of those feel-good recipes you’ll keep coming back to—especially when you need to feed a crowd or warm up on a chilly night.

It’s budget-friendly, easy to prepare with pantry staples, and flexible enough to customize with what you have on hand. Plus, that crispy onion topping takes it over the top!

Whether you’re feeding your family, prepping freezer meals, or bringing a dish to a gathering, this casserole hits the mark every time.

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Have you made this recipe?
Share your twist or a photo in the comments and tag it #FrenchOnionCasseroleLove – I’d love to see how you made it your own!

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