Preheat the oven to 400°F. Line a baking sheet with aluminum foil. Set aside.
In a large bowl, combine the meatball ingredients until well combined. Form 1.5" round meatballs. Place meatballs on the prepared baking sheet. Bake at 400°F for 13-18 minutes.
While the meatballs bake, make the sauce: In a pan over medium-high heat, add all of the sauce ingredients. Stir together well and cook for 3-5 minutes, until the sauce has slightly thickened.
When meatballs are cooked, remove them from the baking sheet and place them in a serving bowl. Pour the sauce over the meatballs and gently toss to coat.
Serve topped with sprinkles of sesame seeds and/or green onion, as desired.
Notes
Makes approximately 4 dinner servings and 6-8 appetizer servings (20-22 meatballs)