Preheat the oven to 400°F (200°C) and line a baking sheet with parchment paper.
In a mixing bowl, combine the ground meat, breadcrumbs, milk, egg, minced garlic, salt, pepper, and parsley (if using). Mix until just combined.
Form the mixture into small meatballs, about 1 inch (2.5 cm) in diameter, and place them on the prepared baking sheet.
Bake the meatballs in the preheated oven for 20 minutes or until they are fully cooked and golden brown.
While the meatballs are baking, prepare the sauce. In a saucepan over medium heat, combine honey, soy sauce, minced garlic, and rice vinegar. Bring to a simmer.
Cook for about 2-3 minutes, then stir in the cornstarch mixture. Cook for another minute until the sauce has thickened.
Once the meatballs are done baking, toss them in the honey garlic sauce until well coated.
Serve the meatballs warm, garnished with additional parsley if desired.