Creamy onion chicken rice casserole combines shredded chicken, tender rice, sour cream, and melted mozzarella with the savory flavor of onion soup mix.
The dish mixes in one bowl, bakes in about half an hour, and gets a crunchy topping of fried onions. It is a reliable way to turn leftover chicken and rice into a full dinner for the family.
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Why This Creamy Onion Chicken Rice Casserole Recipe Works
Cream of chicken soup and sour cream make a rich sauce that coats every grain of rice and keeps the chicken moist during baking.
Dry onion soup mix seasons the whole dish at once, so there is no chopping, sauteing, or extra spice jar needed.
Fried onions stirred in and sprinkled on top add crunch and a toasted onion flavor in every forkful.
Ingredients for Creamy Onion Chicken Rice Casserole
- 2 cups shredded cooked chicken
- 2 cups cooked white rice
- 1 can (10.5 oz) cream of chicken soup
- 1 cup sour cream
- 1 packet dry onion soup mix
- 1 1/2 cups shredded mozzarella cheese
- 1 1/2 cups crispy fried onions, divided
- 1/4 teaspoon black pepper
- Fresh parsley for garnish, optional
Cooked chicken. Rotisserie or leftover chicken saves time, and it only needs to be warmed through during baking.
Cooked rice. Day old rice holds its shape better than fresh rice, which can turn soft and gluey in the sauce.
Sour cream. It balances the soup with a light tang and adds creaminess without extra cooking.
Onion soup mix. The dried onion, garlic, and savory seasonings bring deep flavor, so extra salt is rarely needed.
Mozzarella. It melts into stretchy strands and blends with the sauce for a smooth cheesy bite.
How to Make Creamy Onion Chicken Rice Casserole
1. Heat the oven Heat the oven to 350 degrees F and grease a 9 by 13 inch baking dish.
2. Combine the base In a large bowl, stir together the chicken, rice, cream of chicken soup, sour cream, onion soup mix, mozzarella, and 1 cup of the fried onions.
3. Season the mix Add the pepper and stir until everything is evenly coated and no dry streaks of soup mix remain.
4. Fill the dish Spread the mixture evenly into the prepared dish and press it down gently with a spatula.
5. Add the topping Scatter the remaining 1/2 cup of fried onions over the surface for extra crunch.
6. Bake the casserole Bake uncovered for 25 to 30 minutes until hot, bubbly, golden, and 165 degrees F in the center.
7. Garnish and serve Rest for 5 minutes, then sprinkle with chopped parsley and serve warm.
How to Serve Creamy Onion Chicken Rice Casserole
Serve the casserole warm with a simple green side to balance the richness. A bowl of stovetop bacon green beans or a plate of parmesan garlic roasted brussels sprouts works well, and fluffy homemade dinner rolls soak up extra sauce. Finish the meal with a glass of fresh peach lemonade.
How to Store and Reheat Creamy Onion Chicken Rice Casserole
Cool the casserole and refrigerate it within 2 hours, since cooked rice can grow bacteria if left out. Store covered for 3 to 4 days or freeze for up to 3 months. Reheat portions in an oven set to 350 degrees F or in the microwave until steaming and 165 degrees F in the center. Add a few fresh fried onions after reheating to bring back the crunch.
Tips and Variations for Creamy Onion Chicken Rice Casserole
Cool the rice quickly. If you cook rice for this dish, spread it on a tray and chill it promptly instead of leaving it on the counter.
Use cooked chicken. Rotisserie chicken must still reach 165 degrees F in the center of the casserole.
Skip extra salt. The soup mix, canned soup, and cheese already supply plenty of salt, so taste before adding more.
Save the topping. Keep the last half cup of fried onions for the top so they stay crisp instead of absorbing sauce.
Flag the allergens. The casserole contains milk, wheat, and soy from the soup, soup mix, and fried onions, so check labels.
Try other cheeses. Swiss or Gruyere can replace mozzarella for a nuttier, sharper flavor.
Add vegetables. Stir in cooked broccoli or peas for color if you want a more balanced dinner.
Check trusted guidance. For safe handling of cooked rice and rice dishes, read the University of Maine rice guidance before storing leftovers.
Frequently Asked Questions About Creamy Onion Chicken Rice Casserole
Can I make creamy onion chicken rice casserole ahead of time?
Yes, assemble it without the topping, cover, and refrigerate until baking day, then add the onions and bake a few minutes longer if it is cold.
Can I freeze creamy onion chicken rice casserole?
Yes, freeze the baked and cooled casserole for up to 3 months and thaw it in the refrigerator before reheating.
What rice works in creamy onion chicken rice casserole?
Long grain white rice is the most reliable choice, and leftover rice that has cooled in the refrigerator holds its shape well.
Can I use brown rice?
Yes, use cooked brown rice in the same amount and add a splash of milk to loosen the mixture if it seems dry.
Can I use canned chicken?
Yes, drain canned chicken well and flake it, then proceed as written.
Creamy Onion Chicken Rice Casserole
Equipment
- 9 by 13 inch baking dish
- Large mixing bowl
- Spatula
Ingredients
Main Ingredients
- 2 cup shredded cooked chicken
- 2 cup cooked white rice
- 1 can cream of chicken soup 10.5 oz
- 1 cup sour cream
- 1 packet dry onion soup mix
- 1 cup shredded mozzarella cheese plus 1/2 cup more
- 1 cup crispy fried onions plus 1/2 cup more for topping
- ¼ tsp black pepper
- 1 tbsp fresh parsley optional, chopped
Instructions
Cooking
- Prep. Heat the oven to 350 degrees F and grease a 9 by 13 inch dish.
- Stir. Mix the chicken, rice, soup, sour cream, soup mix, mozzarella, 1 cup onions, and pepper.
- Spread. Press the mixture into an even layer in the dish.
- Top. Sprinkle the remaining 1/2 cup fried onions over the surface.
- Bake. Bake uncovered 25 to 30 minutes until bubbly and 165 degrees F in the center.
- Rest. Stand 5 minutes and garnish with parsley.
