Preheat oven to 375° F.
In a medium mixing bowl, thoroughly mix the ground beef and ground pork.
Coarsely chop the onion and garlic and purée them in a food processor.
To the meat, add the onion/garlic puree, milk, bread crumbs, parsley, oregano, basil, seasoned salt, garlic powder, black pepper, Worcestershire sauce, olive oil, and egg.
Fold in the sharp cheddar cheese.
Mold the meat into a loaf and place in a loaf pan. Bake for 1 to 1 ½ hours.