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PrintFrench Onion Meatballs are tender beef meatballs simmered in a rich, slow-cooked onion gravy. With or without melted cheese, this dish delivers deep flavor and homestyle warmth.
For the Meatballs:
1 lb ground beef (80/20)
1/2 cup breadcrumbs
1 egg
1/4 cup grated onion
2 garlic cloves, minced
1 tsp Worcestershire sauce
1/2 tsp salt
1/4 tsp black pepper
For the Onion Gravy:
2 tbsp butter
1 tbsp olive oil
2 large yellow onions, thinly sliced
2 garlic cloves, minced
1 tsp fresh thyme or 1/2 tsp dried
2 tsp balsamic vinegar or 1/4 cup dry white wine
2 cups low-sodium beef broth
1 tsp cornstarch (optional)
1/2 cup shredded Gruyère or Swiss cheese (optional)
Cook onions in butter and oil over medium heat for 25–30 minutes until soft and golden. Add garlic in the final minute.
In a bowl, mix all meatball ingredients. Form into 1½-inch balls.
Brown meatballs in a skillet on all sides. Set aside.
Return onions to the pan. Stir in thyme and vinegar or wine. Add broth and simmer.
Thicken with cornstarch slurry if desired.
Add meatballs back to the skillet. Cover and simmer 10–12 minutes.
Optional: Top with cheese and cover until melted.