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30-Minute French Onion Chicken Orzo Casserole

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A creamy, comforting one-pan French Onion Chicken Orzo Casserole featuring caramelized onions, tender shredded chicken, and orzo pasta baked in a rich cheesy sauce with golden crispy onions on top.

  • Total Time: 35 minutes
  • Yield: 6 servings 1x

Ingredients

Scale
  • 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
  • Fresh parsley or thyme for garnish

Instructions

  1. Melt butter and olive oil over medium heat in a large oven-safe skillet or Dutch oven. Add onions, sugar, and salt. Cook 20–25 minutes until caramelized. Stir in garlic in last 1–2 minutes.
  2. Stir in orzo and cook 2 minutes to lightly toast. Add chicken, thyme, pepper, and Worcestershire if using. Mix well.
  3. Pour in chicken broth and cream. Simmer gently, then reduce heat to low, cover, and cook 8–10 minutes until orzo is tender.
  4. Stir in 1 cup mozzarella and Parmesan until melted and creamy.
  5. Preheat oven to 375°F (190°C). Sprinkle remaining 1/2 cup mozzarella on top. Bake uncovered 10–15 minutes until bubbly and golden.
  6. Rest 5–10 minutes before serving. Garnish with parsley or thyme and serve hot.

Notes

  • Deglaze onions with white wine or balsamic vinegar for extra flavor.
  • Use rotisserie chicken for quick prep.
  • Substitute half-and-half for heavy cream for lighter option.
  • Use gluten-free orzo or small rice pasta for a gluten-free version.
  • Leftovers reheat well with a splash of broth or cream.
  • Author: lina
  • Prep Time: 15 minutes
  • Cook Time: 20 minutes
  • Category: Main Course
  • Method: Baked
  • Cuisine: American, French-inspired
  • Diet: Halal

Nutrition

  • Serving Size: 1 portion (about 1/6 of recipe)
  • Calories: 515
  • Sugar: 5 g
  • Sodium: 720 mg
  • Fat: 25 g
  • Saturated Fat: 13 g
  • Unsaturated Fat: 10 g
  • Trans Fat: 0 g
  • Carbohydrates: 38 g
  • Fiber: 2 g
  • Protein: 31 g
  • Cholesterol: 115 mg