In a large bowl, combine the ground turkey, breadcrumbs, chopped green onions, cilantro, beaten egg, minced garlic, grated ginger, and 1 tablespoon of soy sauce. Season with salt and pepper. Mix until well combined.
Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Form the turkey mixture into meatballs, about 1 inch in diameter, and place them on the prepared baking sheet.
Bake the meatballs in the preheated oven for about 20 minutes, or until they are cooked through and golden on the outside.
While the meatballs are baking, prepare the teriyaki glaze by combining the remaining soy sauce, honey, sesame oil, and rice vinegar in a small saucepan over medium heat. Stir until the mixture comes to a gentle simmer and thickens slightly, about 5 minutes.
Once the meatballs are done, transfer them to the saucepan with the teriyaki glaze. Gently toss to coat the meatballs evenly in the sauce.
Serve the teriyaki turkey meatballs over steamed rice or alongside broccoli, and sprinkle with sesame seeds for garnish.
Notes
Feel free to adjust the sweetness of the glaze by adding more or less honey.