Ingredients
Scale
- 2 pounds yellow onions
- 1 small bunch fresh thyme
- 2 cloves garlic
- 6 ounces Gruyère cheese
- 1/2 cup panko breadcrumbs
- 1/2 cup whole or 2% milk
- 1 large egg
- 2 teaspoons Worcestershire sauce
- 2 1/2 teaspoons kosher salt, divided
- 3/4 teaspoon freshly ground black pepper, divided
- 1 1/2 pounds ground beef
- 2 tablespoons unsalted butter
- 2 tablespoons all-purpose flour
- 1/2 cup dry white wine
- 1 (14.5-ounce) can beef broth
- 1 teaspoon balsamic or sherry vinegar
- Crusty bread (optional)
Instructions
- Preheat oven to 400°F and line a baking sheet with parchment paper.
- Slice onions, mince garlic, and grate Gruyère cheese.
- In a mixing bowl, combine garlic, thyme, breadcrumbs, milk, egg, Worcestershire sauce, salt, pepper, and ground beef. Mix until just combined.
- Shape into 32 meatballs and place on the prepared baking sheet.
- Bake for 15-20 minutes until cooked through.
- Meanwhile, caramelize onions in butter until golden brown.
- Add flour to the onions followed by white wine and beef broth; cook until thickened.
- Combine baked meatballs with sauce and top with remaining cheese; broil until bubbly.
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Category: Main Dishes
- Method: Baking
- Cuisine: French
Nutrition
- Serving Size: 2 meatballs (approximately 150g)
- Calories: 360
- Sugar: 4g
- Sodium: 850mg
- Fat: 24g
- Saturated Fat: 10g
- Unsaturated Fat: 12g
- Trans Fat: 0g
- Carbohydrates: 18g
- Fiber: 1g
- Protein: 20g
- Cholesterol: 80mg