French Onion Chicken Rice Casserole

French Onion Chicken Rice Casserole fans, get ready for a comforting and hearty meal! Imagine tender chicken and creamy rice combined with the sweet flavor of caramelized onions and topped with melted cheese. Perfect for family dinners or impressing guests with minimal effort, this casserole is sure to please all ages.

French Onion Chicken Rice Casserole topped with melted cheese

how to make French Onion Chicken Rice Casserole

Ingredients

  • 2 cups cooked chicken, diced or shredded
  • 1 cup uncooked long-grain white rice
  • 1 medium yellow onion, thinly sliced
  • 2 tablespoons unsalted butter
  • 2 cups chicken broth
  • 1 cup whole milk or light cream
  • 0.5 cup sour cream (optional, for extra creaminess)
  • 1 teaspoon garlic powder
  • 0.5 teaspoon dried thyme (optional)
  • Salt, to taste
  • Freshly ground black pepper, to taste
  • 1 cup shredded mozzarella or Swiss-style cheese
  • Fresh parsley, chopped, for garnish (optional)

Directions

  1. Melt the butter in a large skillet over medium heat. Add the thinly sliced onions and cook, stirring frequently, until they become soft and deep golden, approximately 10–12 minutes. Lightly season with salt and black pepper.
  2. In a large mixing bowl, combine uncooked rice, chicken broth, milk or cream, sour cream (if using), garlic powder, dried thyme, salt, and black pepper. Stir thoroughly until smooth and well incorporated.
  3. Grease a 23×33 cm baking dish generously. Layer the cooked chicken evenly across the base, followed by the caramelized onions. Pour the rice mixture over and gently stir to distribute the rice and liquids evenly.
  4. Cover the dish tightly with aluminum foil and bake at 190°C for 45–50 minutes, or until the rice is tender and most of the liquid has been absorbed.
  5. Remove the foil, scatter shredded cheese evenly over the top, and return it uncovered to the oven for 10–15 minutes until the cheese is melted and golden.
  6. Allow the casserole to rest for 5 minutes before serving. Garnish with finely chopped parsley if desired and serve warm.

how to serve French Onion Chicken Rice Casserole

Serve this delicious casserole warm, straight from the oven. It pairs well with a side salad or some steamed vegetables for a complete meal. For those who enjoy a bit more crunch, you might consider serving it with a side of baked French toast casserole for a delightful breakfast followed by a satisfying dinner.

how to store French Onion Chicken Rice Casserole

To store leftovers, let the casserole cool completely and then cover it with plastic wrap or foil. You can keep it in the refrigerator for 3–4 days. If you want to store it longer, consider freezing it. Place the cooled casserole in an airtight container or freezer bag. It can be frozen for up to 2 months. When ready to eat, simply thaw it overnight in the fridge and reheat in the oven.

tips to make French Onion Chicken Rice Casserole

  • Use leftover rotisserie chicken to save time.
  • For extra flavor, try adding sautéed mushrooms or a splash of white wine while cooking the onions.
  • Adjust the amount of cheese to your liking. Mixing different types of cheese can also add a unique flavor.

variation (if any)

You can customize this casserole by adding different vegetables such as spinach, bell peppers, or zucchini. For a gluten-free version, replace the rice with quinoa or another gluten-free grain. If you want a lighter option, you can use brown rice instead of white rice, though the cooking time may vary.

FAQs

Can I prepare this casserole in advance?

Yes, you can prepare it up to the baking stage. Cover and refrigerate it overnight. Bake it on the day you’re ready to serve.

What if I don’t have sour cream?

You can skip the sour cream or substitute it with plain Greek yogurt for a similar texture.

Can I use other types of cheese?

Absolutely! You can use any cheese you prefer, such as cheddar or gouda, for a different taste.

Enjoy making and sharing this warm, hearty French Onion Chicken Rice Casserole with your loved ones!

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French Onion Chicken Rice Casserole

A comforting casserole combining tender chicken, creamy rice, and sweet caramelized onions, topped with melted cheese, perfect for family dinners or impressing guests.
Prep Time 20 minutes
Cook Time 1 hour
Total Time 1 hour 20 minutes
Course Dinner, Main Course
Cuisine American, French
Servings 6 servings
Calories 450 kcal

Ingredients
  

Main Ingredients

  • 2 cups cooked chicken, diced or shredded Use leftover rotisserie chicken to save time.
  • 1 cup uncooked long-grain white rice Can substitute with brown rice or quinoa for variation.
  • 1 medium yellow onion, thinly sliced Caramelize for best flavor.
  • 2 tablespoons unsalted butter For caramelizing the onions.
  • 2 cups chicken broth
  • 1 cup whole milk or light cream For creaminess.
  • 0.5 cup sour cream (optional) Can substitute with plain Greek yogurt.
  • 1 teaspoon garlic powder
  • 0.5 teaspoon dried thyme (optional)
  • to taste Salt
  • to taste Freshly ground black pepper
  • 1 cup shredded mozzarella or Swiss-style cheese Use any cheese you prefer.
  • for garnish Fresh parsley, chopped (optional) Adds color and freshness.

Instructions
 

Preparation

  • Melt the butter in a large skillet over medium heat.
  • Add the thinly sliced onions and cook, stirring frequently, until they become soft and deep golden, approximately 10–12 minutes. Lightly season with salt and black pepper.
  • In a large mixing bowl, combine uncooked rice, chicken broth, milk or cream, sour cream (if using), garlic powder, dried thyme, salt, and black pepper. Stir thoroughly until smooth and well incorporated.
  • Grease a 23×33 cm baking dish generously.
  • Layer the cooked chicken evenly across the base, followed by the caramelized onions. Pour the rice mixture over and gently stir to distribute the rice and liquids evenly.

Baking

  • Cover the dish tightly with aluminum foil and bake at 190°C for 45–50 minutes, or until the rice is tender and most of the liquid has been absorbed.
  • Remove the foil, scatter shredded cheese evenly over the top, and return it uncovered to the oven for 10–15 minutes until the cheese is melted and golden.

Serving

  • Allow the casserole to rest for 5 minutes before serving. Garnish with finely chopped parsley if desired and serve warm.

Notes

For extra flavor, try adding sautéed mushrooms or a splash of white wine while cooking the onions. Adjust the amount of cheese to your liking. Mixing different types of cheese can also add a unique flavor.
Keyword Casserole, Chicken Rice, French Onion