Step 1

Combine the ground beef, breadcrumbs, chopped onion, egg, salt, and pepper in a large mixing bowl until everything is well mixed. Form the mixture into 1 and a 1/2-inch diameter balls.

Step 2

In a large nonstick skillet, cook the meatballs over medium heat until they are browned evenly and fully cooked through.

Step 3

In a medium bowl, stir together the brown sugar, water, ketchup, vinegar, soy sauce, and cornstarch until smooth.

Step 4

Pour the sauce over the cooked meatballs in the skillet, then reduce the heat to low.

Step 5

Allow the sauce to simmer until it thickens, about 3 to 5 minutes. Then, serve and enjoy!