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Slow cooker filled with beef meatballs, caramelized onions, and melted Gruyère cheese garnished with parsley.
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Slow Cooker French Onion Meatballs

Prep Time20 minutes
Cook Time4 hours
Total Time4 hours 20 minutes
Servings: 6 servings
Calories: 450kcal

Ingredients

  • 2 lbs ground beef (80/20)
  • 1/2 cup panko breadcrumbs
  • 1 large egg , beaten
  • 1 teaspoon sal t
  • 1/2 teaspoon black pepper
  • 1 teaspoon garlic powder
  • 3 large yellow onions, thinly sliced
  • 2 tablespoons unsalted butter
  • 2 cups beef broth
  • 1 packet (1 oz) dry French onion soup mix
  • 1 tablespoon Worcestershire sauce
  • 1 cup shredded Gruyère cheese
  • 6 slices Provolone cheese
  • 2 tablespoons fresh parsley, chopped

Instructions

  • In a large bowl, combine ground beef, breadcrumbs, egg, salt, pepper, and garlic powder; form into 1.5-inch meatballs.
  • In a large skillet over medium-high heat, melt butter and sear meatballs until browned on all sides, then transfer to the slow cooker.
  • In the same skillet, add sliced onions and cook for 5 minutes until slightly softened.
  • Whisk together beef broth, dry French onion soup mix, and Worcestershire sauce in a small bowl.
  • Place the onions over the meatballs in the slow cooker and pour the broth mixture over the ingredients.
  • Cover and cook on LOW for 4 hours until meatballs are cooked through and onions are tender.
  • Top the meatballs with Provolone slices and shredded Gruyère, then cover for 10 minutes until cheese is fully melted and bubbly.
  • Garnish with fresh parsley before serving directly from the slow cooker.