Description
Indulge in the warm and comforting flavors of French Onion Chicken Casserole. This delightful dish features tender chicken breasts smothered in caramelized onions, rich beef broth, and gooey Swiss cheese, all topped with a crunchy panko layer. Perfect for cozy dinners or impressing guests, it effortlessly combines savory goodness with an inviting aroma that fills your kitchen. Make this casserole for a meal that will leave everyone asking for seconds!
Ingredients
Scale
- 4 boneless skinless chicken breasts (about 1.5 – 2 lbs)
- 3 large sweet yellow onions, thinly sliced
- 1.5 cups shredded Gruyère cheese (or Swiss)
- 1 cup shredded mozzarella cheese
- 1 cup low-sodium beef broth
- 1 tablespoon Worcestershire sauce
- 3 cloves garlic, minced
- 2 tablespoons unsalted butter
- 1 tablespoon olive oil
- 1 teaspoon fresh thyme leaves (or 1/2 tsp dried thyme)
- 1/2 teaspoon garlic powder
- 1/2 teaspoon kosher salt
- 1/4 teaspoon freshly ground black pepper
- 2 tablespoons chopped fresh parsley (for garnish)
Instructions
- Caramelize Onions: Melt butter and 1 tbsp olive oil in a skillet over medium heat. Add sliced onions, thyme, and a pinch of salt. Cook slowly for 20 to 25 minutes, stirring occasionally, until deeply golden brown and caramelized.
- Sear Chicken: Preheat oven to 375°F (190°C). Season chicken with salt, pepper, and garlic powder. In the same skillet over medium-high heat, sear chicken for 3 to 4 minutes per side until golden brown. Remove from heat.
- Assemble Casserole: Spread caramelized onions across the bottom of a baking dish. Place seared chicken breasts on top. Pour beef broth and Worcestershire sauce around the chicken. Top each breast with shredded Gruyère and mozzarella cheese.
- Bake & Broil: Bake uncovered for 20 to 25 minutes until chicken reaches 165°F. Broil on high for 2 minutes until cheese is bubbly with golden toasted spots.
- Garnish & Serve: Rest for 5 minutes, spoon onion jus over chicken, garnish with fresh parsley, and serve warm!
- Prep Time: 15 minutes
- Cook Time: 45 minutes
- Category: Main
- Method: Baking
- Cuisine: French
Nutrition
- Serving Size: 1 piece (approximately 250g)
- Calories: 350
- Sugar: 4g
- Sodium: 550mg
- Fat: 15g
- Saturated Fat: 7g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 24g
- Fiber: 2g
- Protein: 30g
- Cholesterol: 100mg