Preparation Steps

• Preheat oven to 375°F (190°C).
• In a large bowl, combine ground beef, ground pork, breadcrumbs, egg, milk, salt, and pepper. Mix well until just combined. Do not overmix.
• Roll the mixture into 1-inch meatballs. Place them on a baking sheet lined with parchment paper.
• Bake for 15-20 minutes, or until browned and cooked through.
• While the meatballs are baking, prepare the sauce. In a medium saucepan, whisk together ketchup, brown sugar, white vinegar, and soy sauce.
• In a small bowl, whisk together cornstarch and water to create a slurry. Add it to the saucepan with the sauce ingredients.
• Bring the sauce to a simmer over medium heat, stirring constantly, until it thickens. Cook for about 2-3 minutes.
• Add the baked meatballs to the saucepan with the sauce. Stir gently to coat the meatballs.
• Simmer for another 5-7 minutes, or until the meatballs are heated through and well coated.
• Serve hot, garnished with sesame seeds and chopped green onions if desired.