Start by grating the onion and mincing the garlic. I like to mix these together with the ground turkey in a large bowl so the flavors meld. Make sure everything is evenly combined for consistent taste.
Add breadcrumbs, egg, soy sauce, Dijon mustard, and spices to the turkey mixture. I gently fold everything together with my hands to avoid overworking the meat, which keeps the meatballs tender.
Using a cookie scoop, portion the mixture and roll into balls between your palms. I find this method quick and ensures all meatballs are the same size, so they cook evenly.
Place meatballs on a parchment-lined baking sheet and bake at 400°F (200°C) for 15-17 minutes until cooked through. I like to brush them with the honey garlic glaze during the last few minutes for a glossy finish.
Mix honey, apple cider vinegar, and soy sauce in a small bowl. I brush this mixture over the meatballs once they come out of the oven, letting it coat them perfectly.
Serve warm over rice or noodles, or chill for later use. I love storing leftovers in an airtight container for a quick dinner the next day.