French Onion Chicken Orzo Casserole

French Onion Chicken Orzo Casserole is a comforting, hearty dish that combines the rich flavors of French onion soup with tender orzo pasta and juicy chicken. This casserole brings together caramelized onions, creamy cheese, and delicious chicken in one easy-to-make meal. Perfect for weeknight dinners or gatherings, it’s a dish that the whole family will enjoy. The creamy texture and savory taste make it satisfying and delightful. Plus, it’s made in just one pan, which means easy cleanup!

This casserole is not just tasty; it’s also very comforting. The combination of caramelized onions and gooey cheese creates a warm, inviting dish that feels like a hug. Using rotisserie chicken makes prep even quicker, allowing you to enjoy a homemade meal without spending too much time in the kitchen. Whether you’re serving it to family or friends, this casserole is sure to impress.

How to Make French Onion Chicken Orzo Casserole

Ingredients You’ll Need

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)

Step-by-Step 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, right out of the oven. It pairs well with a simple green salad or steamed vegetables for a complete meal. Leftovers can be stored in the fridge and reheated for easy lunches or dinners.

How to Store French Onion Chicken Orzo Casserole

To store leftovers, place the casserole in an airtight container. Store it in the refrigerator for up to 3 days. To reheat, place it in the oven at 350°F (175°C) until warmed through. You can also reheat individual portions in the microwave.

Tips for the Best French Onion Chicken Orzo Casserole

• Cook the onions slowly for the best caramelization.
• Use good quality cheese for maximum flavor.
• Feel free to add your favorite vegetables, like spinach or mushrooms, for extra nutrition.

Recipe Variations

• For a lighter version, try using half and half instead of heavy cream.
• Add a splash of Worcestershire sauce or balsamic glaze for extra depth of flavor.

Frequently Asked Questions (FAQs)

Can I use other types of pasta instead of orzo?
Yes, you can use other small pasta shapes like ditalini or small shells.

Can I make this casserole ahead of time?
Absolutely! You can prepare the casserole up to the baking step, cover it, and refrigerate it until you’re ready to bake.

How do I know when the casserole is done?
The casserole is done when the top is golden and bubbly, and the orzo is cooked through and tender.

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