1Preheat oven to 400 degrees. Lightly oil a 9x13 dish with nonstick spray.
2In a large bowl, combine turkey, quinoa, garlic, onions, egg, soy sauce, sesame oil, Siracha, salt and pepper, to taste. Using a wooden spoon, stir well until combined. Roll mixture into 1 to 1 1/2 inch meatballs forming 18-36 meatballs.
3Place meatballs in prepared dish and bake for 18-20 minutes, or until all sides are browned and meatballs are cooked through
4To make the sauce, whisk together soy sauce, rice vinegar, ginger, sugar, sesame oil, Siracha, chili sauce and 1/2 cup water in a small saucepan over medium high heat.
5In a small bowl, whisk together cornstarch and 1 tablespoon water. Stir into soy sauce mixture until thickened, about 2 minutes.
6Serve meatballs immediately with sauce, garnished with green onions and sesame seeds.