Marcus Rashford and Romelu Lukaku channelled Ole Gunnar Solskjaer with two ice-cool finishes to down Newcastle - and paid tribute to the interim Manchester United boss for influencing their calm approach.
Belgium international Lukaku opened the scoring 38 seconds after coming on as a second half substitute, reacting first after Rashford's dipping free-kick was spilled by Toon 'keeper Martin Dubravka.
And 10 minutes from time Rashford turned from provider to goalscorer by converting after Alexis Sanchez's pass, to secure the 2-0 success and give Solskjaer a fourth straight win.
Editors' Picks
Solskjaer carved out a status as an unerring finisher during his 11 years at Old Trafford as a player - and that reputation has already rubbed off on the strike-pair
"That is the key [to be relaxed]," man-of-the-match Rashford, who scored his third goal of Solskjaer's reign, told Sky Sports.