- Line a baking sheet with foil. 
- In a bowl, combine bread and milk.  Mash together and soak for about 10 minutes or until bread is moistened and paste like.  
- In a bowl, whisk together egg, garlic, salt, and pepper. 
- In a large bowl, combine ground beef and ground pork and gently break up to chunks.  
- Add bread, egg mixture, Reggiano cheese, onions, Italian parsley, and fennel seeds. Gently mix together until just combined. DO NOT OVER HANDLE AND OVER MIX. 
- Using a scoop, portion meat mixture. With lightly oiled hands, shape meat into the size of a golf ball by rolling between the palm of hands.  
- Arrange meatballs in a single layer on prepared baking sheet. 
- Bake meatballs in a 425 F oven for about 10-15 minutes or until internal temperature of 160 F is reached.  
- Remove from pan and keep warm. Serve with marinara, BBQ or sweet and sour sauce.