Preheat oven to 400 F., and chop all the veggies fine. The smaller the better.
In a large mixing bowl, use your hands to knead together all the ingredients, except for the grated mozzarella.
Form the meatballs and place them in an oiled casserole dish in nice neat rows.Bake the meatballs without the grated mozzarella for 30 minutes.Remove the dish from the oven, sprinkle the mozzarella over the meatballs and return the dish to the oven.Bake for about 10 minutes more, or until the cheese is fully melted. The meatballs should be at least 165 F. when done.
Remove from oven, cool slightly and serve.
Nutrition data for this recipe will depend on the amount of rice you make. Data will change depending on what type of meat you use.