Garlic Butter Chicken Meatballs

Ingredient:

• 1/2 cup panko breadcrumbs
• 1/3 cup whole milk
• 1 large egg
• 1 cup grated Parmigiano-Reggiano
• 1/2 cup whole milk ricotta
• 2 tablespoons grated yellow onion
• 1 large garlic clove (1/2 teaspoon), grated, plus 8 cloves, finely chopped (about 2 1/2 tablespoons)
• 2 teaspoons Italian seasoning
• 1 1/2 teaspoons kosher salt
• 1/2 teaspoon ground black pepper
• 2 pounds ground chicken (preferably white and dark meat)
• 1/4 cup olive oil, divided
• 3/4 cup chicken stock
• 1/2 cup cold unsalted European butter (such as Kerrygold), cut into pieces
• Finely chopped parsley
• Lemon wedges