1-Preheating: Begin by preheating your oven to 350 degrees Fahrenheit to ensure even cooking. This method keeps things simple and helps you achieve tender, flavorful results in about 30 minutes total.

2-Mixing: First, in a large bowl, mix all the ingredients thoroughly by hand until everything blends well. This includes the lean ground beef, diced onion, milk, breadcrumbs, eggs, Worcestershire sauce, and salt. Once mixed, shape the mixture into 24 two-inch meatballs for uniform size and even baking.

3-Cooking: Next, heat an oven-safe skillet over medium heat and sear the meatballs for about one minute on each side to lock in juices. Then, transfer the skillet to the oven and bake for 10 to 15 minutes, or until they reach an internal temperature of 165 degrees Fahrenheit. Keep an eye on them to avoid overcooking, and remember that alternative methods like using an air fryer can speed things up.