Preheat oven to 450°
Prepare a large baking sheet with parchment paper (or brush it with neutral oil) and set aside
In a large bowl combine all the meatball ingredients and mix until evenly combined.
Form into 1 1/2 inch meatballs and place on prepared baking sheet.
Lightly brush the meatballs with neutral oil (this helps with browning as the chicken is lean and does not contain a lot of fat like pork or beef).
Bake for 12-15 minutes or until browned and cooked to an internal temperature of 165°
While the meatballs cook prepare the sauce; heat a large sauté over medium heat add in low sodium tamari, rice wine vinegar, ginger, sesame oil, and maple syrup, whisk well and bring to a simmer.
Mix cornstarch and cold water to make a slurry, add to the sauté pan and bring to a boil, whisk until thickened and reduce heat back down to a simmer.
Add meatballs and toss to coat well.
Serve in lettuce cups or over steamed rice, with cucumbers and top with sesame seeds and additional green onions