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A large, baked meatloaf topped with a blanket of melted, bubbly mozzarella cheese and glossy caramelized onion gravy, ready to be sliced and served.

French Onion Meatloaf

This French Onion Meatloaf is rich, savory, and smothered in caramelized onions and melted cheese — a comforting twist on a classic dinner favorite.
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Prep Time 20 minutes
Cook Time 1 hour
Rest Time 10 minutes
Total Time 1 hour 30 minutes
Servings: 6 slices
Course: Main Course
Cuisine: American, French Inspired
Calories: 460
Ingredients Equipment Method Notes

Ingredients
  

Onion Mixture
  • 2 large yellow onions thinly sliced
  • 2 tbsp unsalted butter
  • 1 tbsp olive oil
  • 1/2 tsp salt
  • 1 tsp balsamic vinegar optional, for depth
Meatloaf
  • 1 1/2 lb ground beef (80/20)
  • 1 cup breadcrumbs plain or Italian-style
  • 2 large eggs lightly beaten
  • 1/2 cup beef broth
  • 1/2 cup grated Gruyère or Swiss cheese plus extra for topping
  • 1 tsp Worcestershire sauce
  • 1/2 tsp black pepper
  • fresh thyme leaves for garnish

Equipment

  • Loaf Pan
  • Large Skillet
  • Mixing Bowl
  • Wooden Spoon
  • Oven

Method
 

  1. Preheat oven to 375°F (190°C). Lightly grease a loaf pan and set aside.
  2. In a large skillet, melt butter and olive oil over medium heat. Add sliced onions and salt, cooking slowly for 20–25 minutes, stirring often, until golden and caramelized. Add balsamic vinegar if desired, then remove from heat and cool slightly.
  3. In a large bowl, combine ground beef, breadcrumbs, eggs, beef broth, Worcestershire sauce, pepper, and half of the caramelized onions. Mix gently until just combined — do not overmix.
  4. Transfer the mixture to the prepared loaf pan and shape into a loaf. Top with remaining caramelized onions and a generous sprinkle of Gruyère cheese.
  5. Bake uncovered for 50–60 minutes, or until the internal temperature reaches 160°F (71°C). If cheese browns too quickly, tent with foil during baking.
  6. Remove from oven and let rest for 10 minutes before slicing. Garnish with thyme and serve with mashed potatoes or roasted vegetables.

Notes

For a richer flavor, use a mix of ground beef and pork. You can also top the baked meatloaf with additional caramelized onions and melted cheese just before serving for a restaurant-style finish.