Delicious French Onion Chicken Casserole

Category: Where Culinary Traditions Collide

You toss together juicy rotisserie chicken with fluffy rice and rich, creamy soup. Then you layer on gooey Swiss or mozzarella cheese, making every bite extra melty and good. On top goes a pile of crispy fried onions for some crunch. There’s a dash of garlic and onion flavor, plus a sprinkle of fresh parsley for a bright finish. Great for busy evenings or get-togethers—just mix everything, bake in one dish, and you’re done. Scoop it out hot and dig in. Cleanup is a breeze and you end up with a cozy meal made from stuff you probably already have at home.

Monica
By Monica Monica
Updated on Sat, 19 Jul 2025 15:09:24 GMT
Someone digging into chicken casserole with a fork. Pin
Someone digging into chicken casserole with a fork. | flavorsfuse.com

Craving something warm and cozy? Baked French Onion Chicken and Rice is just the thing for cool evenings. You’ll get juicy chicken and fluffy rice surrounded by creamy soup and cheese—with crispy onions for that perfect crunch. It’s the kind of oven meal that just makes you feel good.

The first night I put together this dish after a busy day, it quickly became a regular at home. Now I bring it to potlucks and on weeknights when I need something easy everyone loves.

Comforting Ingredients

  • Chopped fresh parsley: sprinkle on at the end for fresh flavor and a pop of green, flat-leaf is best
  • Salt and pepper: just enough to bring out the flavors
  • Onion and garlic powders: add extra boldness—use fresh ones if you can
  • French fried onions: that's where the crunch comes from, and saves some for topping
  • Mozzarella or Swiss cheese: gets perfectly melty and gooey, block cheese you shred is best
  • Sour cream: keeps things tangy and ultra creamy, full-fat tastes great
  • French onion soup: deep, savory base and moisture—condensed kinds give best texture
  • Cream of chicken soup: the creamy backbone, low-sodium works too
  • Shredded rotisserie chicken: the easy shortcut for succulent bites
  • Cooked white rice: fluffy and soaks up all the creamy goodness

Simple Step-by-Step

Let It Rest Before Serving:
When you pull the pan out, wait a couple minutes so it firms up. Add parsley before you dig in. Serve warm and scoop out big cheesy helpings.
Top with More Fried Onions:
After a half hour, sprinkle leftover fried onions evenly over everything, then give it another five minutes in the oven until crispy and golden.
Bake Until Bubbling:
Put it on the middle rack, uncovered. Wait about thirty minutes for the cheese to melt and the edges to start bubbling.
Fill the Pan:
Use a 9x13 pan and spray or oil it lightly. Spread the whole mixture in so it’s all even.
Mix It All Up:
Stir together cooked rice, chicken, both soups, sour cream, shredded cheese, a cup of fried onions, onion and garlic powder, and a sprinkle of salt and pepper. Mix until it’s completely blended.
Heat Up the Oven:
Get your oven going to 350°F so it’s ready and your food cooks evenly.
A plate of food with cheese and chicken. Pin
A plate of food with cheese and chicken. | flavorsfuse.com

French fried onions aren’t just for crunch—they take me back to holidays with that amazing savory smell floating from the kitchen. They turn a simple dinner into something everyone looks forward to.

Easy Storage Ideas

Tuck leftovers in a sealed container and stash in the fridge for up to three days. Warm it up in the microwave for a quick meal or bake, covered at 325°F, to keep the topping crisp. Want to prep ahead? Put the casserole together but wait to add that last fried onion layer right before the final bake.

Easy Swaps

Want a nutty flavor? Use brown rice or swap in cooked quinoa for extra protein. Swap in Greek yogurt for a lighter, tangy twist. Provolone joins Swiss or mozzarella if you're after a cheese boost. Don’t have rotisserie chicken? Any cooked boneless chicken you’ve got will totally work here.

A bowl of food with cheese and chicken. Pin
A bowl of food with cheese and chicken. | flavorsfuse.com

How to Serve It

Honestly, it’s filling enough to eat on its own—but it’s great with a crisp green salad or oven-roasted veggies. Add some warm rolls or crusty bread to complete that homestyle vibe. It’s always a hit at big family dinners and laid-back get-togethers.

Where These Flavors Come From

The onion-and-cheese combo comes from French onion soup, a classic French favorite. This dish mixes those flavors with all-American chicken and rice comfort food. Tossing fried onions on top is a vintage move families have loved since the '50s.

FAQs About the Recipe

→ Can I use brown rice instead of white?

Swap in cooked brown rice if you want extra fiber and a nutty flavor. Just keep an eye on the cooking time, it might take a little longer.

→ Is rotisserie chicken recommended?

Rotisserie chicken is handy and adds nice flavor, but really, any cooked shredded chicken you’ve got will work just fine.

→ Can I make ahead and reheat?

You bet! Mix everything up ahead, chill until you’re ready, then pop in the oven. Leftovers taste great heated up later, either in the microwave or oven.

→ Are there cheese alternatives?

Go ahead and use cheddar, mozzarella, Swiss, or whatever cheese you love that gets nice and melty.

→ How do I prevent mushy rice?

Use rice that’s totally cooked and cooled. Cold rice stays firmer and won’t get soggy in the dish.

→ What pairs well on the side?

Crisp salads or roasted veggies brighten up the meal and balance out the creamy casserole vibe.

Chicken Onion Casserole

Juicy chicken mixed into creamy rice, topped with golden cheese and crunchy onions. It’s a tasty, fuss-free meal folks keep asking for.

Prep Time
10 min
Cooking Time
35 min
Total Time
45 min
By Monica: Monica

Category: Fusion Main Dishes

Skill Level: Beginner-Friendly

Cuisine Style: American

Yield: 6 Servings (6 servings)

Dietary Preferences: ~

What You'll Need

→ Main Components

01 2 cups pulled cooked chicken
02 2 cups white rice, cooked

→ Soups and Dairy

03 1½ cups shredded mozzarella or Swiss cheese
04 1 cup sour cream
05 1 can (10.5 oz) French onion soup
06 1 can (10.5 oz) cream of chicken soup

→ Toppings and Seasonings

07 Black pepper to taste
08 Salt to taste
09 1½ cups crispy French fried onions, split up
10 ½ teaspoon onion powder
11 ½ teaspoon garlic powder
12 Chopped parsley to finish

Step-by-Step Guide

Step 01

Once it's out of the oven, toss on some parsley and dig in while it's hot.

Step 02

Toss the last ½ cup French fried onions over the top and pop it back in the oven for 5 minutes so it gets crunchy and brown.

Step 03

Let it bake with no cover for 30 minutes, and watch for the edges to bubble.

Step 04

Coat your 9x13-inch pan with a bit of oil or spray and dump the mixture in, spreading it out.

Step 05

Toss the rice, shredded chicken, cream of chicken soup, French onion soup, sour cream, cheese, a cup of the fried onions, plus the garlic and onion powders, salt, and pepper together in a big bowl and mix well.

Step 06

Crank the oven to 350°F (175°C) to get started.

Additional Notes

  1. For the best bite, chill your cooked rice first so everything stays nice and fluffy without extra water.

Essential Tools

  • Oven
  • Large mixing bowl
  • 9×13-inch pan

Allergy Information

Review each ingredient for possible allergens and consult a healthcare professional if you're unsure.
  • Has milk, soy, and wheat. French fried onions might include gluten.

Nutritional Facts (Per Serving)

This info is for reference purposes only and isn't a substitute for medical advice.
  • Calories: 375
  • Fats: 18 g
  • Carbohydrates: 34 g
  • Proteins: 21 g