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The Best French Onion Chicken Orzo Casserole

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  • Author: Lidia
  • Prep Time: 20 minutes
  • Cook Time: 45 minutes
  • Total Time: 1 hour 5 minutes
  • Yield: 6–8 servings
  • Category: Casserole
  • Method: Baking
  • Cuisine: American
  • Diet: Halal

Description

This French Onion Chicken Orzo Casserole combines the savory flavors of French onion soup with creamy orzo pasta and tender shredded chicken in a cheesy, comforting bake perfect for family dinners.


Ingredients

  • 2 tablespoons olive oil
  • 2 tablespoons butter
  • 3 large yellow onions, thinly sliced
  • 1 teaspoon sugar
  • 4 cloves garlic, minced
  • 1 teaspoon fresh thyme (or ½ teaspoon dried thyme)
  • Salt and black pepper, to taste
  • 1 cup dry white wine (or chicken broth)
  • 1½ cups uncooked orzo pasta
  • 2 cups cooked shredded chicken
  • 2½ cups chicken broth
  • 1 cup heavy cream
  • 1½ cups shredded Gruyère cheese
  • 1 cup shredded mozzarella cheese
  • ½ cup grated Parmesan cheese
  • Fresh parsley, chopped (for garnish, optional)

Instructions

  1. Heat olive oil and butter in a large skillet over medium heat. Add sliced onions and sugar, cooking for 20–25 minutes until deeply caramelized, stirring frequently.
  2. Add garlic and thyme, cooking for 1–2 minutes until fragrant.
  3. Deglaze the pan with white wine, simmering for 3–4 minutes until slightly reduced.
  4. Preheat oven to 375°F (190°C).
  5. In a large bowl, combine onion mixture, uncooked orzo, shredded chicken, chicken broth, heavy cream, half of the Gruyère and mozzarella, and all of the Parmesan. Season with salt and pepper.
  6. Transfer mixture to a greased 9×13-inch baking dish. Top with remaining Gruyère and mozzarella.
  7. Cover with foil and bake for 25 minutes. Uncover and bake for an additional 10–15 minutes until bubbly and golden.
  8. Let sit for 5–10 minutes before garnishing with fresh parsley and serving.

Notes

  • Swap Gruyère with Swiss or Fontina for a milder or nutty flavor.
  • Add sautéed mushrooms for an earthy twist.
  • Use rotisserie chicken for convenience.
  • Make ahead and refrigerate before baking to save time.
  • Add a splash of broth or cream when reheating to maintain creaminess.

Nutrition

  • Serving Size: 1 serving
  • Calories: 520
  • Sugar: 5g
  • Sodium: 680mg
  • Fat: 28g
  • Saturated Fat: 15g
  • Unsaturated Fat: 11g
  • Trans Fat: 0.5g
  • Carbohydrates: 36g
  • Fiber: 2g
  • Protein: 32g
  • Cholesterol: 105mg