French Onion Stuffed Chicken .

French Onion Stuffed Chicken is a juicy, flavor-packed dish filled with caramelized onions and melted cheese, then baked until perfectly tender. This recipe serves 4.

Ingredients

For the Chicken

• 4 boneless, skinless chicken breasts
• 1 tbsp olive oil
• 1 tsp salt
• ½ tsp black pepper
• 1 tsp garlic powder
• 1 tsp onion powder
• 1 tsp dried thyme

For the Filling

• 2 tbsp butter
• 2 large yellow onions, thinly sliced
• 2 cloves garlic, minced
• 1 tsp fresh thyme leaves (or ½ tsp dried thyme)
• 1 tsp Worcestershire sauce
• 1 cup shredded Gruyère cheese (or Swiss cheese)
• ¼ cup grated Parmesan cheese

For the Sauce

• 1 cup beef broth
• 1 tbsp Worcestershire sauce
• 1 tsp Dijon mustard
• 1 tbsp all-purpose flour (optional, for a thicker sauce)

Garnish

• 1 tbsp chopped fresh parsley

Instructions

1. Preheat the oven to 375°F (190°C).
2. Heat the butter in a skillet over medium-low heat. Add the sliced onions and cook for 25–30 minutes, stirring occasionally, until deeply golden and caramelized.
3. Stir in the garlic, thyme, and Worcestershire sauce. Cook for 1 minute, then remove from the heat and let cool slightly.
4. Mix the Gruyère and Parmesan cheeses into the onion mixture.
5. Using a sharp knife, cut a pocket into the side of each chicken breast, being careful not to cut all the way through.
6. Season the chicken with salt, pepper, garlic powder, onion powder, and dried thyme.
7. Stuff each chicken breast with the onion and cheese mixture. Secure with toothpicks if needed.
8. Heat the olive oil in an oven-safe skillet over medium-high heat. Sear the chicken for 3–4 minutes per side until lightly browned.
9. In a small bowl, whisk together the beef broth, Worcestershire sauce, Dijon mustard, and flour (if using). Pour the mixture around the chicken.
10. Transfer the skillet to the oven and bake for 18–22 minutes, or until the chicken reaches an internal temperature of 165°F (74°C).
11. Spoon some of the pan sauce over the chicken, garnish with fresh parsley, and serve.

Serving Suggestions

Serve with:

• Mashed potatoes
• Roasted vegetables
• Buttered green beans
• Rice or egg noodles
• Crusty bread to soak up the sauce

Tips

• For the richest flavor, take your time caramelizing the onions—don’t rush this step.
• Gruyère provides the classic French onion flavor, but Swiss or mozzarella also work well.
• Let the chicken rest for 5 minutes before slicing to keep it juicy.