Preheat Your Oven

• Preheat your oven to 350°F (175°C). Grease a loaf pan or line a baking sheet with parchment paper.

Caramelize the Onions

• Heat butter in a skillet over medium heat. Add sliced onions and cook, stirring occasionally, until golden brown and caramelized (about 15–20 minutes).
• Remove from heat and set aside, reserving a small portion for topping.

Mix the Meatloaf Ingredients

• In a large bowl, combine ground beef, caramelized onions (except reserved portion), breadcrumbs, beef broth, egg, and French onion soup mix.
• Mix gently with your hands until just combined—avoid overmixing to keep the meatloaf tender.

Shape the Meatloaf

• Shape the mixture into a loaf and place it in the prepared pan.
• Create a shallow well in the center of the loaf for the cheese filling.

Add Cheese and Toppings

• Sprinkle half of the shredded Gruyère cheese into the well.
• Top the loaf with the remaining cheese and reserved caramelized onions.

Bake the Meatloaf

• Bake for 1 hour, or until the internal temperature reaches 160°F (70°C).

Rest and Serve

• Let the meatloaf rest for 10 minutes before slicing. This allows the juices to redistribute for a juicy, flavorful result.
• Garnish with fresh parsley and serve warm.