french onion stuffed chicken casserole


French Onion Stuffed Chicken Casserole makes for a delicious dinner! Juicy, succulent chicken breasts stuffed with caramelized onions and glorious melted cheese. A perfect weeknight or weekend dinner. Low Carb and Keto approved!

serves 4 people
prep time 15 Min
cook time 45 Min

Ingredients For french onion stuffed chicken casserole

  • 2 tablespoons unsalted butter
  • 4 large onions (halved and thinly sliced)
  • Pinch of salt and pepper (to season)
  • 2 teaspoons fresh chopped thyme (divided)
  • 2 tablespoons white wine, sherry or balsamic vinegar ((OPTIONAL))
  • 2 cloves garlic (minced)
  • 1/2 cup beef broth or stock (divided)
  • 1 tablespoon olive oil
  • 4 boneless, skinless chicken breasts
  • 2 teaspoons garlic powder
  • 1 teaspoon ground thyme
  • 1 cup shredded gruyere cheese ((or mozzarella cheese))
  • 4 tablespoons freshly grated parmesan cheese
See Directions at