Dinner

French Onion Chicken Orzo Casserole Recipe

ByVictor Layne October 23, 2025October 23, 2025

Introduction

This French Onion Chicken Orzo Casserole combines the rich, savory flavors of caramelized onions and tender chicken with creamy orzo pasta for a comforting and hearty dish. It’s perfect for cozy dinners and is easy to prepare in one skillet.

A white bowl holds a creamy pasta dish with three main layers. The bottom layer is soft orzo pasta mixed with white shredded chicken. Above this is a thick, melted cheese layer that is light yellow with a smooth texture. On top is a layer of golden brown crispy fried onions scattered evenly. Small pieces of fresh green parsley are sprinkled across the top, adding a pop of color. The bowl is set on a white marbled surface. photo taken with an iphone --ar 4:5 --v 7

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)

Instructions

Step 1: In a large oven-safe skillet or Dutch oven, melt the butter and olive oil over medium heat. Add the 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.
Step 2: Stir in the orzo and cook for 2 minutes to lightly toast it. Add the shredded chicken, dried thyme, black pepper, and Worcestershire sauce or balsamic glaze if using. Mix well.
Step 3: Pour in the chicken broth and heavy cream. Bring the mixture to a gentle simmer, then reduce heat to low, cover, and cook for 8–10 minutes, stirring occasionally, until the orzo is tender.
Step 4: Stir in 1 cup of the shredded mozzarella and all the Parmesan cheese until melted and creamy.
Step 5: Preheat your 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.
Step 6: Let the casserole rest for 5–10 minutes before serving. Garnish with fresh thyme or parsley if desired.

Tips & Variations

Use half and half instead of heavy cream for a lighter casserole.
Rotisserie chicken saves time and adds great flavor.
Add sautéed mushrooms or spinach for extra veggies.
Try a splash of white wine when cooking the onions for added depth.

Storage

Store leftover casserole in an airtight container in the refrigerator for up to 3 days. Reheat in the oven or microwave until warmed through. Add a splash of broth or cream when reheating if it seems dry.

How to Serve

A white bowl filled with a layered pasta dish, with the bottom layer showing creamy, soft, light golden noodles mixed with shredded chicken. On top, there is a layer of melted cheese that is golden brown and bubbly in parts. The dish is finished with a crispy layer of fried onions, dark golden to brown in color, adding texture and crunch. Small pieces of chopped green herbs are sprinkled over the top, giving a fresh contrast to the warm tones. The background surface is a white marbled texture. photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I make this casserole ahead of time?

Yes, you can prepare the casserole up to the point of baking, then cover and refrigerate for up to 24 hours before baking as directed.

Can I use a different pasta instead of orzo?

Yes, small pasta shapes like acini di pepe or small shells work well, but adjust the cooking time accordingly to ensure the pasta is tender.

Victor Layne