Description

French Onion Orzo Bake combines the rich, sweet flavors of caramelized onions with creamy orzo pasta and melted cheeses, creating a cozy, comforting one-pan dish perfect for weeknight dinners. Inspired by classic French onion soup, this bake layers savory broth, thyme, garlic, and a blend of Gruyère, mozzarella, and Parmesan cheese into a creamy, bubbly casserole with a golden crust.

Ingredients

Scale

Main Ingredients

2 tablespoons unsalted butter
1 tablespoon olive oil
3 large yellow onions, thinly sliced
3 cloves garlic, minced
1 tablespoon fresh thyme leaves or 1 teaspoon dried thyme
1 teaspoon salt (or to taste)
½ teaspoon freshly ground black pepper
1 tablespoon balsamic vinegar
1 cup dry orzo pasta
2 cups low sodium beef broth
½ cup heavy cream
1 cup shredded Gruyère cheese or Swiss cheese
1 cup shredded mozzarella cheese
¼ cup grated Parmesan cheese

Optional Garnishes

Fresh parsley or chives, chopped

Instructions

Caramelize the Onions: In a large oven-safe skillet or sauté pan, melt the butter with olive oil over medium-low heat. Add sliced onions and cook slowly for 25–30 minutes, stirring often, until deeply golden and caramelized. This slow cooking develops the rich, sweet onion flavor essential to the dish.
Add Garlic and Seasoning: Stir in the minced garlic, thyme, salt, and black pepper. Cook for about 1 minute until fragrant. Deglaze the pan with balsamic vinegar, stirring well to loosen any browned bits stuck to the bottom, adding depth to the flavor.
Add Orzo and Liquids: Stir in the dry orzo pasta. Pour in the beef broth and heavy cream, then bring to a simmer. Reduce heat slightly and cook uncovered for 8–10 minutes, stirring occasionally, until the orzo is mostly tender and most of the liquid has been absorbed.
Add Cheese: Stir in half of the Gruyère and mozzarella cheeses, mixing until melted and the sauce becomes creamy and well combined.
Bake: Preheat the oven to 400°F (200°C). Sprinkle the remaining Gruyère, mozzarella, and all the Parmesan cheese evenly over the top. Transfer the skillet to the oven and bake for 10–15 minutes, until the top is golden and bubbly.
Optional Broil for a Golden Crust: For an extra cheesy crust, switch the oven to broil and cook for 2–3 minutes more, watching carefully to avoid burning until deeply golden.
Garnish and Serve: Let the dish rest for 5–10 minutes to allow the sauce to thicken slightly. Garnish with fresh parsley or chives if desired, then serve warm and enjoy.

Notes

Use vegetable broth and vegetarian-friendly cheese to make this dish vegetarian.
To make ahead, prepare up to the stovetop step, then refrigerate. Bring to room temperature before baking.
Freeze cooled leftovers up to 2 months; thaw overnight in refrigerator before reheating.
Reheat with a splash of cream or broth to loosen the sauce and avoid drying out.
Substitute orzo with small pasta shapes like couscous or ditalini, adjusting cooking times as needed.
Add variations such as shredded chicken, sautéed mushrooms, spinach or kale, or a pinch of red pepper flakes for heat.

Prep Time: 15 minutes
Cook Time: 35 minutes
Category: Dinner
Method: Baking
Cuisine: French-Inspired

Keywords: French onion soup, orzo bake, caramelized onions, comforting casserole, easy dinner, cheesy pasta bake, thyme, Gruyère cheese, one-pan meal