Why Make This Recipe
French Onion Chicken Orzo Casserole is a comforting dish that combines the rich flavors of French onion soup with tender orzo pasta and juicy chicken. This recipe is perfect for weeknight dinners or gatherings, as it is hearty and satisfying. The caramelized onions add amazing sweetness, while the melted cheese creates a creamy texture that everyone will love. It’s an easy one-pan meal that delivers wonderful taste without too much effort.
How to Make French Onion Chicken Orzo Casserole
Ingredients:
- 2 tablespoons unsalted butter
- 1 tablespoon olive oil
- 2 large yellow onions (thinly sliced)
- 1 teaspoon sugar
- 1/2 teaspoon salt
- 3 garlic cloves (minced)
- 1 1/2 cups orzo pasta
- 2 cups cooked shredded chicken (rotisserie works well)
- 1/2 teaspoon dried thyme
- 1/4 teaspoon black pepper
- 2 cups low-sodium chicken broth
- 1 cup heavy cream (or half and half for lighter option)
- 1 1/2 cups shredded mozzarella cheese
- 1/2 cup grated Parmesan cheese
- Optional: 1/2 teaspoon Worcestershire sauce or balsamic glaze (for added depth)
Directions:
Caramelize the Onions: In a large oven-safe skillet or Dutch oven, melt the butter and olive oil over medium heat. Add the sliced onions, sugar, and salt. Cook for 20–25 minutes, stirring occasionally, until the onions are deeply golden and caramelized. Stir in the minced garlic during the last 1–2 minutes.
Add Orzo and Chicken: Stir in the orzo and cook for 2 minutes, allowing it to lightly toast. Add the shredded chicken, thyme, pepper, and Worcestershire sauce if using. Mix well.
Pour in Liquids: Add the chicken broth and cream. Bring to a gentle simmer. Reduce heat to low, cover, and let it cook for 8–10 minutes, stirring occasionally, until the orzo is tender.
Add Cheese: Stir in 1 cup of mozzarella and the Parmesan cheese. Mix until melted and creamy.
Bake the Casserole: Preheat the oven to 375°F (190°C). Sprinkle the remaining 1/2 cup of mozzarella over the top. Bake uncovered for 10–15 minutes until bubbly and golden on top.
Serve: Let it rest for 5–10 minutes before serving. Garnish with fresh thyme or parsley if desired.
How to Serve French Onion Chicken Orzo Casserole
This casserole is delicious on its own or paired with a simple green salad. You can also serve it with crusty bread to soak up the creamy sauce. A sprinkle of fresh herbs on top adds a nice touch and enhances the flavor.
How to Store French Onion Chicken Orzo Casserole
You can store leftovers in an airtight container in the fridge for up to 3 days. To reheat, place it in the oven or microwave until warmed through. If you want to freeze it, let it cool completely before transferring it to a freezer-safe container. It can last up to 3 months in the freezer.
Tips to Make French Onion Chicken Orzo Casserole
- Use Rotisserie Chicken: For quick preparation, use pre-cooked rotisserie chicken.
- Adjust Seasoning: You can adjust the salt and pepper according to your taste.
- Extra Cheese: If you love cheese, feel free to add more mozzarella or even add some Gruyère for a richer flavor.
Variation (if any)
You can make this dish vegetarian by omitting the chicken and using vegetable broth instead of chicken broth. Additionally, you can add mushrooms or spinach for extra nutrients and flavor.
FAQs
1. Can I use different types of pasta?
Yes, you can substitute orzo with other small pasta shapes like mini shells or fusilli. Just adjust the cooking time if needed.
2. Can I make this casserole ahead of time?
Absolutely! You can prepare everything in advance, store it in the fridge, and bake it when you’re ready to serve.
3. What can I use instead of heavy cream?
You can use half-and-half or a creamy plant-based milk for a lighter option. Just ensure it’s a variety that can handle the heat without curdling.

French Onion Chicken Orzo Casserole
Ingredients
Method
- In a large oven-safe skillet or Dutch oven, melt the butter and olive oil over medium heat.
- Add the sliced onions, sugar, and salt. Cook for 20–25 minutes, stirring occasionally, until the onions are deeply golden and caramelized.
- Stir in the minced garlic during the last 1–2 minutes.
- Stir in the orzo and cook for 2 minutes, allowing it to lightly toast.
- Add the shredded chicken, thyme, pepper, and Worcestershire sauce if using. Mix well.
- Add the chicken broth and cream. Bring to a gentle simmer. Reduce heat to low, cover, and let it cook for 8–10 minutes, stirring occasionally, until the orzo is tender.
- Stir in 1 cup of mozzarella and the Parmesan cheese. Mix until melted and creamy.
- Preheat the oven to 375°F (190°C). Sprinkle the remaining 1/2 cup of mozzarella over the top.
- Bake uncovered for 10–15 minutes until bubbly and golden on top.
- Let it rest for 5–10 minutes before serving. Garnish with fresh thyme or parsley if desired.


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