Tangy Sweet and Sour Meatballs

In a large bowl, combine the ground beef, breadcrumbs, milk, egg, chopped onion, garlic powder, salt, and black pepper. Mix until well combined.

Shape the mixture into small meatballs, about 1 inch in diameter.

Heat the vegetable oil in a large skillet over medium heat. Add the meatballs and cook, turning occasionally, until browned on all sides and cooked through, about 10-12 minutes.

In a separate bowl, whisk together the ketchup, brown sugar, white vinegar, and soy sauce. If desired, add cornstarch to thicken the sauce.

Pour the sauce over the meatballs in the skillet. Stir gently to coat the meatballs evenly with the sauce.

Reduce the heat to low and simmer for 10 minutes, allowing the flavors to meld and the sauce to thicken.