Ingredients
Scale
- 3 large yellow onions, thinly sliced
- 4 tablespoons unsalted butter
- 4 cups beef broth (low sodium)
- 1 cup dried orzo pasta
- 2 cups cooked shredded chicken (rotisserie works well)
- 1 teaspoon fresh thyme, minced
- 1 cup Gruyère cheese, shredded
Instructions
- Step 1: Melt the butter in a large Dutch oven or deep skillet over medium-low heat. Add the thinly sliced onions and cook slowly for 25–30 minutes, stirring occasionally, until the onions are deeply caramelized and dark golden brown.
- Step 2: Increase the heat to medium. Add the beef broth and fresh thyme to the caramelized onions, scraping up any browned bits from the bottom of the pan. Bring the mixture to a gentle boil.
- Step 3: Stir in the dried orzo pasta. Reduce the heat and simmer, uncovered, for 10-12 minutes, or until the orzo is cooked through and has absorbed most of the liquid, creating a thick, creamy sauce.
- Step 4: Preheat oven to 375°F (190°C). Remove the orzo mixture from the heat and stir in the shredded cooked chicken. Season with salt and pepper to taste. Transfer the entire mixture to a greased 9×13 inch casserole dish.
- Step 5: Top the casserole evenly with the shredded Gruyère cheese. Bake for 15-20 minutes, or until the cheese is melted, bubbly, and lightly golden brown. Let rest for 5 minutes before serving.
Notes
- Store leftovers covered tightly in the refrigerator for up to 3 days, but freezing is not recommended as the orzo texture will become overly mushy upon thawing.
- If reheating individual portions, add a small splash of beef broth or water to the casserole dish before microwaving or baking to restore the moisture and creamy texture.
- For a flavorful counterpoint, serve the rich, savory casserole alongside a crisp, lightly dressed arugula salad or simple steamed green beans.
- The most crucial step is patience during caramelization; cook the onions slowly for the full 25–30 minutes to develop the deep, savory French Onion flavor base.
- Prep Time: 15 minutes
- Cook Time: 20 minutes
- Method: Stovetop
- Cuisine: American