01 - Set oven to 400°F and line a baking sheet with parchment paper or grease lightly with olive oil.
02 - In a large bowl, combine ground turkey, breadcrumbs, Parmesan, egg, milk, green onions, garlic, oregano, salt, pepper, and parsley. Mix gently until just combined to avoid tough texture.
03 - With damp hands, shape mixture into 1-inch diameter balls and arrange evenly on the prepared baking sheet.
04 - Lightly brush or spray meatballs with olive oil. Bake for 18 to 20 minutes, turning once halfway, until golden brown and cooked through.
05 - Meanwhile, whisk together barbecue sauce, honey, soy sauce, apple cider vinegar, and Dijon mustard in a small saucepan. Bring to simmer over medium heat and cook for 3 to 4 minutes until slightly thickened.
06 - Transfer baked meatballs to a large bowl, pour warm glaze over them, and toss gently to coat evenly.
07 - Transfer glazed meatballs to a serving platter, garnish with additional chopped parsley if desired and serve warm with cocktail picks.