Why Make This Recipe
French Onion Chicken Orzo Casserole combines the comforting flavors of French onion soup with hearty chicken and orzo pasta. It’s a warm and filling dish that is perfect for family dinners or meal prep. With its creamy texture and caramelized onions, this casserole is sure to impress everyone at the table.
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 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 shredded chicken, thyme, pepper, and Worcestershire 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 mozzarella and the Parmesan cheese. Mix until melted and creamy.
Bake the Casserole: Preheat oven to 375°F (190°C). Sprinkle the remaining 1/2 cup 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
Serve this casserole warm, straight from the oven. It makes a great main dish and pairs well with a simple side salad or crusty bread. You can also add a sprinkle of fresh herbs on top for extra flavor.
How to Store French Onion Chicken Orzo Casserole
If you have leftovers, let the casserole cool completely before storing. Place it in an airtight container in the fridge, where it will last for up to 3-4 days. You can also freeze it for up to 2-3 months. Just make sure to thaw it in the fridge overnight before reheating.
Tips to Make French Onion Chicken Orzo Casserole
- For extra flavor, use homemade chicken broth instead of store-bought.
- Feel free to add vegetables like mushrooms or spinach for added nutrition.
- If you like a bit of tang, add a splash of balsamic glaze while mixing in the chicken.
Variation
You can customize this casserole by using different types of cheese, such as gouda or cheddar, for a unique taste. You can also replace orzo with other pasta shapes like penne or rotini.
FAQs
Can I make this casserole ahead of time?
Yes, you can prepare the casserole up to the baking step and store it in the fridge. Just bake it when you’re ready to serve.
Can I use uncooked orzo instead?
No, using uncooked orzo will not yield good results, as it needs to be cooked in the broth for the right texture.
How do I reheat the casserole?
To reheat, add a splash of chicken broth to the casserole to keep it creamy, then warm it in the oven at 350°F (175°C) until heated through. Alternatively, you can microwave individual portions.

French Onion Chicken Orzo Casserole
- Total Time: 55 minutes
- Yield: 6 servings 1x
- Diet: Poultry
Description
A warm and filling dish that combines comforting flavors of French onion soup with hearty chicken and orzo pasta, perfect for family dinners.
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
- 1/2 teaspoon dried thyme
- 1/4 teaspoon black pepper
- 2 cups low-sodium chicken broth
- 1 cup heavy cream
- 1 1/2 cups shredded mozzarella cheese
- 1/2 cup grated Parmesan cheese
- Optional: 1/2 teaspoon Worcestershire sauce or balsamic glaze
Instructions
- Caramelize the onions: In a large oven-safe skillet or Dutch oven, melt the butter and olive oil over medium heat. Add 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 the orzo and cook for 2 minutes, allowing it to lightly toast. Add shredded chicken, thyme, pepper, and Worcestershire if using. Mix well.
- Pour in 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 1 cup mozzarella and the Parmesan cheese. Mix until melted and creamy.
- Bake in a preheated oven at 375°F (190°C). Sprinkle the remaining 1/2 cup 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.
Notes
For extra flavor, use homemade chicken broth instead of store-bought. Feel free to add vegetables like mushrooms or spinach for added nutrition.
- Prep Time: 15 minutes
- Cook Time: 40 minutes
- Category: Main Course
- Method: Baking
- Cuisine: French
Nutrition
- Serving Size: 1 serving
- Calories: 450
- Sugar: 6g
- Sodium: 600mg
- Fat: 22g
- Saturated Fat: 10g
- Unsaturated Fat: 10g
- Trans Fat: 0g
- Carbohydrates: 40g
- Fiber: 2g
- Protein: 25g
- Cholesterol: 70mg
Keywords: casserole, chicken, orzo, French onion, comfort food, family dinner

