Preheat oven to 400˚F. Combine ground meats with egg, BelGioioso Romano, parsley, garlic, salt and pepper in mixing bowl. Blend in breadcrumbs. Slowly add water, mixing until moist. Shape meatball mixture into 1 1/2 inch balls and place onto a baking sheet.
Bake 20-25 minutes, until no longer pink in the center. Top with warm marinara sauce and extra Romano.