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French Onion Chicken Orzo Casserole

Creamy orzo casserole made with shredded chicken and caramelized onions.
Cooked with chicken broth and cream, then finished with mozzarella and Parmesan.
Bake until bubbly and golden for a comforting family dinner.
Prep Time 15 minutes
Course Dinner, Casserole
Cuisine American-Inspired, French-Inspired

Ingredients
  

  • 2 tablespoons unsalted butter
  • 1 tablespoon olive oil
  • 2 large yellow onions thinly sliced
  • 1 teaspoon sugar
  • ½ teaspoon salt
  • 3 garlic cloves minced
  • 1½ cups orzo pasta
  • 2 cups cooked shredded chicken
  • ½ teaspoon dried thyme
  • ¼ teaspoon black pepper
  • 2 cups low-sodium chicken broth
  • 1 cup heavy cream or half-and-half
  • 1½ cups shredded mozzarella cheese divided
  • ½ cup grated Parmesan cheese
  • ½ teaspoon Worcestershire sauce or balsamic glaze optional
  • Fresh thyme or parsley optional, for garnish

Instructions
 

  • Caramelize the onions: Melt the butter and olive oil in a large oven-safe skillet or Dutch oven over medium heat. Add the onions, sugar, and salt. Cook for 20–25 minutes, stirring occasionally, until deeply golden and caramelized. Add the garlic during the final 1–2 minutes.
  • Toast the orzo: Stir in the orzo and cook for about 2 minutes, stirring frequently, until lightly toasted.
  • Add the chicken and seasonings: Stir in the shredded chicken, dried thyme, black pepper, and Worcestershire sauce or balsamic glaze, if using.
  • Add the liquids: Pour in the chicken broth and cream. Bring the mixture to a gentle simmer, then reduce the heat to low. Cover and cook for 8–10 minutes, stirring occasionally, until the orzo is tender.
  • Make it cheesy: Stir in 1 cup of the mozzarella and all of the Parmesan until the cheeses melt into the creamy orzo.
  • Bake: Preheat the oven to 375°F (190°C). Sprinkle the remaining ½ cup mozzarella evenly over the top. Bake uncovered for 10–15 minutes, until bubbling and golden.
  • Rest and serve: Let the casserole rest for 5–10 minutes before serving. Garnish with fresh thyme or parsley if desired.

Notes

For the creamiest texture, serve this casserole shortly after its resting period. A crisp green salad, roasted vegetables, or steamed green beans make simple side dishes.
If using Worcestershire sauce, check the label for halal suitability. You can also use a halal-certified Worcestershire sauce or substitute a small amount of balsamic glaze.