Dinner

French Onion Chicken Orzo Casserole Recipe

ByVictor Layne October 27, 2025October 27, 2025

Introduction

French Onion Chicken Orzo Casserole combines the rich, savory flavors of caramelized onions with tender chicken and creamy orzo pasta. This comforting dish is perfect for a cozy weeknight meal or a satisfying dinner with family and friends.

A close-up view of a white bowl filled with a creamy pasta dish made of small noodle shapes mixed with shredded chicken and melted cheese, creating a light beige and pale yellow base layer. On top, there is a golden brown layer of crispy fried onions with a textured, crunchy look. Scattered green parsley pieces are sprinkled over the whole dish, adding bursts of fresh green color. The bowl sits 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 to combine.
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 shredded mozzarella and the grated Parmesan cheese until melted and creamy.
Step 5: Preheat the oven to 375°F (190°C). Sprinkle the remaining 1/2 cup of mozzarella over the top of the casserole. Bake uncovered for 10–15 minutes until bubbly and golden on top.
Step 6: Remove from the oven and let the casserole rest for 5–10 minutes before serving. Garnish with fresh thyme or parsley if desired.

Tips & Variations

Use rotisserie chicken to save time and add extra flavor.
For a lighter dish, substitute heavy cream with half and half or whole milk.
Add mushrooms with the onions for extra earthiness.
Try topping with crispy fried onions for additional texture.

Storage

Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat gently on the stovetop or in the microwave, adding a splash of chicken broth or cream if the casserole feels too thick. This dish is best enjoyed fresh but holds well for meal prep.

How to Serve

This is a close-up of a white bowl filled with creamy baked pasta. There are about three visible layers: the bottom layer is soft yellow pasta mixed in a creamy sauce, the middle layer is melted, lightly browned cheese, and the top layer consists of crispy, golden-brown fried onions scattered generously. Small green parsley pieces are sprinkled all over the dish, adding bright green color against the warm tones of the pasta and onions. The bowl sits on 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 recipe ahead of time?

Yes, you can prepare the casserole through the simmering stage, then cool and refrigerate it. Bake it fresh before serving.

Can I use a different type of pasta instead of orzo?

Yes, small pasta shapes like ditalini or small shells can be used, but adjust the cooking time accordingly as they may require more or less liquid and time to cook.