Ingredients:
1 lb (450g) ground beef
1 egg
½ cup breadcrumbs
¼ cup milk
1 tsp garlic powder
1 tsp onion powder
1 tsp salt
½ tsp black pepper
1 tbsp Worcestershire sauce
1 cup shredded mozzarella (or Gruyère for classic flavor)
For the Onion Gravy:
2 tbsp butter
2 medium onions, thinly sliced
1 tsp sugar
1 tsp fresh thyme (or ½ tsp dried)
1 cup beef broth
1 tbsp flour
Salt & pepper to taste
Instructions:
1. Make the Meatballs:
In a bowl, mix beef, egg, breadcrumbs, milk, garlic powder, onion powder, salt, pepper, and Worcestershire.
Form into 12–14 meatballs.
2. Cook the Meatballs:
In a skillet, brown meatballs on all sides until mostly cooked (they will finish in the oven).
3. Caramelize the Onions:
In the same skillet, melt butter and cook onions with sugar until golden (10 minutes).
Stir in flour, thyme, and beef broth. Simmer until slightly thickened.
4. Bake:
Place meatballs in a baking dish, pour onion gravy over, and top with shredded cheese.
Broil or bake at 400°F (200°C) for 10 minutes until cheese is melted and bubbly.
5. Serve Hot:
Garnish with parsley. Perfect with mashed potatoes, rice, or crusty bread