Preheat oven to 400.

In a bowl, combine onions, bread crumbs and Parmesan cheese.

Add beef and mix well.

shape into 1-inch balls; place on a rack.

In a shall baking pan, bake for 15-20 minutes or until no longer pink. (Or cook in a skillet on medium heat.).

Reduce oven temperature to 350.

Meanwhile, arrange bread in a single layer in an ungreased 13x9x2″ baking dish.

(All of the bread might not be used.).

Combine cream cheese, mayo, Italian seasoning and pepper; spread over the bread.

Sprinkle with 1/2 cup mozzarella.

Combine sauce, water and garlic; add meatballs.

Pour over cheese mixture; sprinkle with remaining mozzarella.

Bake, uncovered at 350 for 30 minutes or until heated through.