Cut part of cheese into twenty-four to twenty-six ½” cubes.
Shred remaining cheese and set aside.
In large bowl, with fork, mix beef, bread crumbs, milk, egg, onion, salt and pepper.
Shape some mixture around each cheese cube to make 1 ½ inch meatballs.
Seal well or cheese will leak out during cooking.
Option 1: Place meatballs on cookie sheet sprayed with cooking spray.
Bake at 350 for about 15-20 minutes or until meatballs are cooked.
Remove from oven and place in large baking dish.
Cover with spaghetti sauce, then cheese.
Bake at about 350 for 10-15 minutes or until heated through.
Serve over noodles.
Option 2: In 12-inch skillet over medium-high heat, in hot salad oil, cook meatballs until browned on all sides.
Spoon drippings from skillet; add spaghetti sauce.
Reduce heat to low; cover and simmer 10 minutes.
Sprinkle meatballs with reserved shredded cheese.
Serve over wide dumpling noodles or noodles of your choice.