Paul Pogba opened the scoring in the first half with a stunning left-footed strike after a nice bit of skill on the edge of the penalty area, and then doubled the lead in his own eccentric way with a slow run up to a penalty before smashing into the top corner.
Luke Shaw's cross was adjudged to have been handled by Kevin Mbabu inside the penalty area; it looked harsh, but United deserved a two-goal lead at half time.
The win was wrapped up in fine style as Anthony Martial capped of a swift counter attack to take their lead to three over their Swiss opponents.
Check out how we rated the players in the gallery below:
Young Boys vs Manchester United player ratings
Show all 11
Register for free to continue reading
Registration is a free and easy way to support our truly independent journalism
By registering, you will also enjoy limited access to Premium articles, exclusive newsletters, commenting, and virtual events with our leading journalists
Join our new commenting forum
Join thought-provoking conversations, follow other Independent readers and see their replies