French Onion Chicken Orzo Casserole topped with melted cheese and herbs

French Onion Chicken Orzo Casserole

ByAchraf

Why Make This Recipe

French Onion Chicken Orzo Casserole is a comforting and hearty dish that combines the rich flavors of caramelized onions with tender chicken and creamy pasta. It’s perfect for a family dinner or when you want to impress guests without spending all day in the kitchen. This casserole is not only delicious but also easy to prepare, making it a go-to recipe for busy weeknights.

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

  1. 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.

  2. 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.

  3. 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.

  4. Add Cheese: Stir in 1 cup mozzarella and the Parmesan cheese. Mix until melted and creamy.

  5. 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.

  6. 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 great on its own but can also be served with a simple side salad or garlic bread. Add a sprinkle of fresh herbs on top for extra flavor and color.

How to Store French Onion Chicken Orzo Casserole

To store leftover casserole, let it cool to room temperature. Transfer it to an airtight container and keep it in the refrigerator for up to 3 days. For longer storage, you can freeze it for up to 2 months. Thaw in the refrigerator before reheating.

Tips to Make French Onion Chicken Orzo Casserole

  • Use rotisserie chicken for quick preparation.
  • For deeper flavor, consider adding a splash of balsamic glaze or Worcestershire sauce.
  • Make sure to stir the orzo occasionally while it simmers to prevent it from sticking to the bottom of the pan.

Variation

For a vegetarian version, skip the chicken and replace it with more vegetables like mushrooms and spinach. You can also use vegetable broth instead of chicken broth.

FAQs

1. Can I make this casserole ahead of time?
Yes, you can prepare the casserole up to the baking step, cover it, and refrigerate for up to 24 hours. Just bake it for a few extra minutes when ready.

2. What type of cheese can I use?
You can use any cheese you like! Gruyère or cheddar are good alternatives to mozzarella and Parmesan.

3. Can I use a different pasta?
Yes, while orzo is great in this dish, you can substitute it with another small pasta type like ditalini or small shells. Adjust cooking time accordingly.