Mix all the meatball ingredients together in a large bowl. For best results, we suggest you use a microplane zester for the garlic and ginger and slice the spring onions very finely. Cover and let the meat mixture rest in the fridge while you prepare everything else.
Preheat your oven to 400°F (200°C).
Wash and chop the carrots into 1/2 inch to 1 inch slices. Wash the broccolini and green onions.
Season the veggies with oil, garlic powder, pepper, and soy sauce.
On a large sheet pan, add the carrots and bake for 10-15 minutes, depending on thickness.
While they bake, remove the meatball mixture from the fridge and form 1 inch balls. Work with wet hands for easy handling.
Remove the sheet pan from the oven and add the meatballs, broccolini, and spring onions.
Continue baking at 400°F (200°C) for another 10-15 minutes or until the meatballs are cooked through, reaching an internal temperature of 165°F (74°C).
While the meatballs bake, in a microwave safe bowl mix together all the sauce ingredients. Microwave in 30 second increments until it starts bubbling and thickens a lot. Alternatively, you can do this in a small saucepan on the stove.
Spoon the sauce over the meatballs. Garnish with spring onions and sesame seeds and serve with rice.