French Onion Chicken Orzo Casserole - Easy One-Pan

This French Onion Chicken Orzo Casserole is the dinner I make when I want the deep, sweet flavor of French onion soup but need something that actually fills you up. It's got tender chicken, creamy orzo, and a blanket of melted cheese on top. All of it cooks in one pan, which means less washing up.

The trick is giving the onions time to caramelize. That's where all the flavor comes from. Don't rush it. While they cook, you can get the chicken and orzo ready. Then everything goes into the oven and comes out bubbling and golden.

It's the kind of meal that feels fancy but is really just simple ingredients doing their job. You probably have most of them in your kitchen already.

About the Ingredients

2 tablespoons (28g) unsalted butter

Butter helps caramelize the onions and adds richness. You can use olive oil instead if you prefer.

3 large yellow onions, thinly sliced

Yellow onions caramelize best because they have the right balance of sugar and water. Sweet onions like Vidalia also work.

1 teaspoon salt, divided

Salt draws moisture out of the onions, helping them soften and brown. Use kosher salt if you have it.

1 1/2 pounds (680g) boneless, skinless chicken thighs, cut into bite-sized pieces

Chicken thighs stay moist and flavorful. You can use chicken breasts, but they may dry out faster.

1/2 teaspoon black pepper

Freshly ground pepper tastes better, but pre-ground works fine.

3 cloves garlic, minced

Fresh garlic gives a punch. In a pinch, use 1/2 teaspoon garlic powder.

1 cup (200g) orzo pasta

Orzo is a small rice-shaped pasta. You can substitute with other small pasta like ditalini or stelline.

1/2 cup (120ml) dry white wine

The wine deglazes the pan and adds acidity. If you don't cook with wine, use chicken broth instead.

2 cups (480ml) chicken broth

Use low-sodium broth so the dish isn't too salty. Homemade broth works great.

1 tablespoon fresh thyme leaves (or 1 teaspoon dried)

Thyme pairs perfectly with onions and chicken. If using dried, add it with the broth.

1 cup (100g) shredded Gruyère cheese

Gruyère melts beautifully and has a nutty flavor. Swiss or provolone are good swaps.

1/2 cup (50g) shredded Parmesan cheese

Parmesan adds a salty, savory note. Pecorino Romano works too.

Tips & Tricks

• Don't rush the onions. Caramelizing takes about 15 minutes. If they start to stick, add a splash of water or broth to scrape up the browned bits.
• Cut the chicken into even pieces so they cook at the same rate. Aim for 1-inch chunks.
• If the top is browning too fast but the orzo isn't done, cover the dish loosely with foil and continue baking.

Step-by-Step Instructions

1. Caramelize the Onions

Melt the butter in a large oven-safe skillet over medium heat. Add the sliced onions and 1/2 teaspoon of the salt. Cook, stirring occasionally, until the onions are soft and golden brown, about 15 minutes. If they stick, add a splash of water.

2. Brown the Chicken

Push the onions to the sides of the skillet. Add the chicken pieces in a single layer. Season with the remaining 1/2 teaspoon salt and the pepper. Cook without stirring for 2-3 minutes, then flip and cook until lightly browned on all sides, about 3 more minutes.

3. Add Garlic and Wine

Stir in the minced garlic and cook for 30 seconds until fragrant. Pour in the white wine, scraping up any browned bits from the bottom of the pan. Let it bubble for 1-2 minutes until slightly reduced.

4. Add Orzo and Liquids

Stir in the orzo, chicken broth, and thyme. Bring to a simmer. The liquid should be enough to cover the orzo. If not, add a little extra broth.

5. Bake the Casserole

Preheat your oven to 375°F (190°C). Once the mixture is simmering, transfer the skillet to the oven. Bake uncovered for 20 minutes, stirring once halfway through, until the orzo is tender and most of the liquid is absorbed.

6. Add the Cheese

Remove the skillet from the oven. Sprinkle the Gruyère and Parmesan evenly over the top. Return to the oven and bake for another 5-7 minutes, until the cheese is melted and bubbly, and the edges are golden.

7. Rest and Serve

Let the casserole rest for 5 minutes before serving. This lets the orzo soak up any remaining liquid and makes it easier to scoop. Serve hot, straight from the skillet.

Delicious Variations

Make it vegetarian

Omit the chicken and use vegetable broth. Add a can of drained cannellini beans for protein.

Add mushrooms

Sauté 8 ounces of sliced mushrooms with the onions for extra earthy flavor.

Use a different cheese

Try smoked Gouda or fontina for a different taste.

How to Store FRENCH ONION CHICKEN ORZO CASSEROLE THE FERVENT MAMA

Frequently Asked Questions

This one-pan dinner is a keeper. Try it tonight, and don't be surprised when the whole family asks for seconds. Dinner's done. Go put your feet up.

French Onion Chicken Orzo Casserole – Easy One-Pan

This French Onion Chicken Orzo Casserole is a cozy one-pan meal with caramelized onions, tender chicken, and creamy orzo, topped with melted cheese.

15 minPrep time35 minCook time6Servings285 kcalCalories

Print RecipePin Recipe

🧂 Ingredients

• 2 tablespoons (28g) unsalted butter
• 3 large yellow onions, thinly sliced
• 1 teaspoon salt, divided
• 1 1/2 pounds (680g) boneless, skinless chicken thighs, cut into bite-sized pieces
• 1/2 teaspoon black pepper
• 3 cloves garlic, minced
• 1 cup (200g) orzo pasta
• 1/2 cup (120ml) dry white wine
• 2 cups (480ml) chicken broth
• 1 tablespoon fresh thyme leaves (or 1 teaspoon dried)
• 1 cup (100g) shredded Gruyère cheese
• 1/2 cup (50g) shredded Parmesan cheese

📋 Instructions

1. 1Caramelize the Onions — Melt the butter in a large oven-safe skillet over medium heat. Add the sliced onions and 1/2 teaspoon of the salt. Cook, stirring occasionally, until the onions are soft and golden brown, about 15 minutes. If they stick, add a splash of water.
2. 2Brown the Chicken — Push the onions to the sides of the skillet. Add the chicken pieces in a single layer. Season with the remaining 1/2 teaspoon salt and the pepper. Cook without stirring for 2-3 minutes, then flip and cook until lightly browned on all sides, about 3 more minutes.
3. 3Add Garlic and Wine — Stir in the minced garlic and cook for 30 seconds until fragrant. Pour in the white wine, scraping up any browned bits from the bottom of the pan. Let it bubble for 1-2 minutes until slightly reduced.
4. 4Add Orzo and Liquids — Stir in the orzo, chicken broth, and thyme. Bring to a simmer. The liquid should be enough to cover the orzo. If not, add a little extra broth.
5. 5Bake the Casserole — Preheat your oven to 375°F (190°C). Once the mixture is simmering, transfer the skillet to the oven. Bake uncovered for 20 minutes, stirring once halfway through, until the orzo is tender and most of the liquid is absorbed.
6. 6Add the Cheese — Remove the skillet from the oven. Sprinkle the Gruyère and Parmesan evenly over the top. Return to the oven and bake for another 5-7 minutes, until the cheese is melted and bubbly, and the edges are golden.
7. 7Rest and Serve — Let the casserole rest for 5 minutes before serving. This lets the orzo soak up any remaining liquid and makes it easier to scoop. Serve hot, straight from the skillet.

👨🍳 Chef's Note: The caramelized onions are the heart of this dish. Take your time with them – it's worth the extra few minutes.

Servings: 6

Cuisine: American

Course: Dinner

Easy Recipes for Everyday Cooking15 minutes35 minutes55 minutes

Nutrition (per serving): 285 kcal · 12g protein · 22g carbs · 9g fat