Preheat oven to 400°F.
In a large mixing bowl, combine onions, bell peppers, breadcrumbs and Parmesan cheese.
Add beef and mix well. Shape into 1 inch balls. Place on a rack on a shallow baking sheet with sides. ( I use cookie sheet )
Bake at 400°F until no longer pink in the middle. Usually 15 to 20 minutes.
Reduce oven to 350°F.
In a 9x13 ungreased baking dish, arrange the bread slices in a single layer.
Combine cream cheese, mayonnaise, Italian seasoning and black pepper.
Spread evenly over bread slices and top with 1/2 cup of the mozzarella cheese . I like using both mozzarella and parmesan cheese together.
Combine spaghetti sauce, garlic and water, Add meatballs. Stir well to coat meatballs well.
Pour over bread and cheese mixture evenly. Sprinkle with remaining mozzarella cheese.
Bake uncovered at 350°F for 30 minutes or until heated through.
If your in a hurry, you can also use the frozen meatballs, thawed to save time. I like using marinara sauce also in place of spaghetti sauce. Good either way.
I grill up the leftover bread to use to soak up all the sauce :)
