Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper.
In a large bowl, combine ground turkey, panko breadcrumbs, chopped green onions, beaten egg, minced garlic, grated ginger, and 1/4 cup teriyaki sauce. Mix until just combined.
Using your hands, shape the mixture into small meatballs (about 1-1.5 inches in diameter) and place them on the prepared baking sheet.
Bake the meatballs in the preheated oven for about 20 minutes, or until cooked through and lightly browned. You can brush them with additional teriyaki sauce halfway through baking for extra flavor.
While the meatballs are baking, heat vegetable oil in a pan over medium heat. Add broccoli and bell pepper, and sauté for 5-7 minutes until they are tender-crisp.
In serving bowls, add a generous portion of cooked rice. Top with sautéed vegetables and meatballs.
Drizzle with extra teriyaki sauce and sprinkle sesame seeds on top for garnish. Add extra green onion if desired.
Notes
Serve the meatball bowls with chopsticks and a lime wedge on the side for a fresh contrast.