Ingredients
For the Caramelized Onions:
- 2 large yellow onions, thinly sliced
- 2 tablespoons olive oil
- 2 tablespoons butter
- 1 teaspoon sugar
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
For the Chicken:
- 1.5 lbs boneless, skinless chicken breasts, cut into 1-inch cubes
- 1 tablespoon olive oil
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 1/2 teaspoon dried thyme
- Salt and pepper to taste
For the Orzo Bake:
- 1 cup orzo pasta, uncooked
- 4 cups chicken broth
- 1 cup heavy cream
- 1/2 cup shredded Gruyère cheese, plus more for topping
- 1/4 cup grated Parmesan cheese
- 2 tablespoons chopped fresh parsley
- 1 tablespoon Worcestershire sauce
- Salt and pepper to taste
Step-by-Step Instructions
Getting Started:
- Preheat your oven to 375°F (190°C). Grease a 9×13 inch baking dish.
Caramelizing the Onions:
- In a large skillet, heat olive oil and butter over medium heat. Add sliced onions, sugar, salt, and pepper.
- Cook, stirring occasionally, for 30-40 minutes, or until the onions are deeply golden brown and caramelized. This step is crucial for the signature French onion flavor, so don’t rush it! If they start to burn, lower the heat and add a splash of water.
- Remove caramelized onions from the skillet and set aside.
Cooking the Chicken:
- In the same skillet, heat olive oil over medium-high heat. Add cubed chicken, garlic powder, onion powder, dried thyme, salt, and pepper.
- Cook until chicken is cooked through and lightly browned, about 5-7 minutes. Remove from heat.
Assembling the Orzo Bake:
- In a large bowl, combine uncooked orzo, chicken broth, heavy cream, Gruyère cheese, Parmesan cheese, parsley, Worcestershire sauce, salt, and pepper. Stir well.
- Pour the orzo mixture into the prepared baking dish.
- Top with the cooked chicken and caramelized onions, spreading them evenly over the orzo.
- Sprinkle generously with additional Gruyère cheese.
Baking:
- Cover the baking dish with aluminum foil and bake for 30 minutes.
- Remove the foil and bake for an additional 15-20 minutes, or until the orzo is tender and the cheese is melted and bubbly. Keep an eye on it to prevent burning!
- Let the bake rest for 10 minutes before serving. This allows the flavors to meld together beautifully.
Tips and Tricks for French Onion Chicken Orzo Bake Perfection
Choosing the Right Cheese:
Gruyère is the quintessential cheese for French onion soup and, by extension, this bake. Its nutty, slightly sweet flavor melts beautifully and creates that signature golden crust. However, if you can’t find Gruyère, Swiss cheese is a good substitute. Provolone could also work in a pinch, though it will have a milder flavor.
Don’t Skip the Caramelization:
The deeply caramelized onions are what make this dish truly special. The slow cooking process brings out their natural sweetness and creates a depth of flavor that you just can’t get with quickly sautéed onions. Be patient and let them cook down slowly.
Adjusting the Liquid:
If the orzo appears dry during baking, add a little more chicken broth. Conversely, if it seems too watery at the end, remove the foil and bake for a few more minutes to allow the excess liquid to evaporate. The goal is a creamy, not soupy, consistency.
Adding a Touch of Wine:
For an extra layer of flavor, deglaze the skillet with a splash of dry white wine (like Sauvignon Blanc or Pinot Grigio) after caramelizing the onions. Let the wine reduce slightly before adding the onions back to the skillet.
Make It Ahead:
You can assemble the entire bake ahead of time and store it in the refrigerator for up to 24 hours. When ready to bake, add an extra 10-15 minutes to the baking time to ensure it’s heated through.
Variations and Substitutions
Vegetarian Option:
Omit the chicken and add sautéed mushrooms or other vegetables of your choice. You could even use a vegetarian chicken substitute.
Spicy Kick:
Add a pinch of red pepper flakes to the orzo mixture for a little heat.
Different Herbs:
Experiment with different herbs like rosemary or thyme in addition to, or in place of, the parsley.
Breadcrumb Topping:
For a crispy topping, combine breadcrumbs with melted butter and Parmesan cheese and sprinkle over the bake before the final 15-20 minutes of baking.
Serving Suggestions
This French Onion Chicken Orzo Bake is a complete meal on its own, but it also pairs well with a simple green salad or steamed vegetables. A crusty baguette for soaking up the delicious sauce is always a welcome addition.
Other Comfort Food Casseroles You’ll Love
If you’re a fan of easy and comforting casseroles, be sure to check out these other recipes: Chicken Parmesan Casserole for an Italian classic, French Onion Beef Casserole if you want to change things up, Chicken Broccoli Alfredo Bake for a creamy delight, Million Dollar Chicken Casserole for a dish that is a guaranteed crowd-pleaser, Chicken Broccoli Orzo Bake for another delicious orzo option, or Chicken Pot Pie Casserole for a cozy, comforting classic.
The Joy of a Homemade Casserole
There’s something truly special about a homemade casserole. It’s the ultimate comfort food, perfect for busy weeknights or cozy weekends. This French Onion Chicken Orzo Bake is a delicious twist on a classic flavor combination, and I know you’re going to absolutely love it. So grab your ingredients, preheat your oven, and let’s get cooking!
What cheese is recommended for this French Onion Chicken Orzo Bake, and what are some good substitutes?
Gruyère cheese is the recommended cheese due to its nutty, slightly sweet flavor and how well it melts. If Gruyère is unavailable, Swiss cheese is a good substitute. Provolone could also work, though it will have a milder flavor.
How important is the caramelization process for the onions in this dish?
The deeply caramelized onions are what make this dish truly special. The slow cooking process brings out their natural sweetness and creates a depth of flavor that is essential to the recipe. Don’t rush this step!
Can I prepare this French Onion Chicken Orzo Bake ahead of time?
Yes, you can assemble the entire bake ahead of time and store it in the refrigerator for up to 24 hours. When ready to bake, add an extra 10-15 minutes to the baking time to ensure it’s heated through.
What can I serve with the French Onion Chicken Orzo Bake?
This bake is a complete meal on its own. It also pairs well with a simple green salad or steamed vegetables. A crusty baguette for soaking up the sauce is also recommended.

ULTIMATE FRENCH ONION CHICKEN ORZO BAKE
Equipment
- Large skillet
- 9×13 inch baking dish
- Large bowl
- Oven
- Aluminum foil
- Measuring cups and spoons
- Cutting board
- Knife
Ingredients
- 2 large yellow onions, thinly sliced
- 2 tablespoons olive oil
- 2 tablespoons butter
- 1 teaspoon sugar
- ½ teaspoon salt
- ¼ teaspoon black pepper
- 1.5 lbs boneless, skinless chicken breasts, cut into 1-inch cubes
- 1 tablespoon olive oil
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- ½ teaspoon dried thyme
- Salt and pepper to taste
- 1 cup orzo pasta, uncooked
- 4 cups chicken broth
- 1 cup heavy cream
- 1 ½ cups shredded Gruyère cheese, divided
- ¼ cup grated Parmesan cheese
- 2 tablespoons chopped fresh parsley
- 1 tablespoon Worcestershire sauce
- Salt and pepper to taste
Instructions
- Preheat your oven to 375°F (190°C). Grease a 9×13 inch baking dish.
- In a large skillet, heat olive oil and butter over medium heat. Add sliced onions, sugar, salt, and pepper.
- Cook, stirring occasionally, for 30-40 minutes, or until the onions are deeply golden brown and caramelized. Remove from skillet and set aside.
- In the same skillet, heat olive oil over medium-high heat. Add cubed chicken, garlic powder, onion powder, dried thyme, salt, and pepper.
- Cook until chicken is cooked through and lightly browned, about 5-7 minutes. Remove from heat.
- In a large bowl, combine uncooked orzo, chicken broth, heavy cream, 1/2 cup Gruyère cheese, Parmesan cheese, parsley, Worcestershire sauce, salt, and pepper. Stir well.
- Pour the orzo mixture into the prepared baking dish.
- Top with the cooked chicken and caramelized onions, spreading them evenly over the orzo.
- Sprinkle generously with the remaining Gruyère cheese.
- Cover the baking dish with aluminum foil and bake for 30 minutes.
- Remove the foil and bake for an additional 15-20 minutes, or until the orzo is tender and the cheese is melted and bubbly.
- Let the bake rest for 10 minutes before serving.
