French Onion Chicken Meatballs Recipe

Ingredients

• pepper, to taste
• 1 large egg, beaten
• 2 large yellow onions, halved and thinly sliced
• 1 teaspoon salt
• ¼ cup Italian breadcrumbs
• ½ teaspoon black pepper
• 2 tablespoons olive oil
• 1 pound ground chicken
• 1 cup shredded Gruyere cheese, divided
• 2 cups beef broth
• 2 tablespoons fresh parsley, chopped, plus more for garnish
• 1 tablespoon all-purpose flour
• salt, to taste
• 2 tablespoons unsalted butter
• 5 cloves garlic, minced, divided
• 2 teaspoons fresh thyme, chopped