Jesse Lingard curled home a brilliant effort to round off the win, ensuring he finished top scorer on four.
Adnan Januzaj also converted with a neat header while Wilfried Zaha again looked good, particularly in the first-half.
"A couple of the young lads, Adnan and Jesse Lingard, who I didn't know as much about, did well and Wilfried Zaha, who has just joined, he has shown what he is capable of in the games he has played," said Moyes.
"I think they will go away from the trip feeling they have contributed to it."
Lingard and Januzaj have certainly put forward a forceful case for remaining at Old Trafford, rather than heading out on loan as almost certainly would have happened if Sir Alex Ferguson had remained in charge.
Yet Moyes' squad is still to take shape given he has not even met Javier Hernandez and Antonio Valencia yet, whilst skipper Nemanja Vidic and winger Nani are amongst those who missed the tour through injury.