On the half an hour mark with the very first effort on goal in the match, United broke the deadlock after Romelu Lukaku’s header found the back of the net after he rose highest to head home a sublime cross by Marcus Rashford.
Eight minutes later, the Red Devils doubled their lead, when Juan Mata’s rolled the ball into teammate Jesse Lingard’s path, to sweep home for United’s second goal has the hosts looked particularly toothless going forward.
Since Alan Pardew has arrived at the Hawthorns, the Baggies haven’t registered a single goal and find themselves second from the bottom on the table.
The hosts offered very little in attack with one shot on target by left back Kieran Gibbs in a half where United were well worthy of their 2-0 lead going into half-time.
Pardew, made a change at half-time with his side chasing the game, replacing Claudio Yacob with Gareth Barry who joined Jake Livermore in midfield after the interval.
It was the former Manchester City midfielder who made the desired impact as he had the next effort on goal for West Brom from a free kick outside United penalty area which was saved by David de Gea.
Barry then opened his account with his first goal for the Baggies and their first goal in six hours of football as the hosts pulled one back to half the deficit to 2-1 with 13 minutes left of regular time. The 36-year-old veteran’s left footed strike from close range after a goalmouth scramble ensued from the corner.
It was a much improved second half performance from the hosts from which Pardew and his side can take many positives from the match, but United held on to claim the win.