It was in the 65th minute that the Frenchman nicely took down a high ball and advanced in from the right edge.
A bit outside the penalty area, he pulled to the left, unreachable for Fulham goalkeeper Alphonse Areola.
Fulham otherwise got off to a great start when Ademola Lookman ran through and rolled in 1-0 already after five minutes of play.
It looked like a suspected offside, but replays showed that the goal was correct.
Invitation behind the receipt
A little over a quarter of an hour later, the receipt came.
Alphonse Areola could not hold the ball and released it to Cavani, who struck straight away.
A real invitation from the home team.
United then steamed on without creating any remarkable chances.
Before Paul Pogba took matters into his own hands.
Last just over a week ago, the Frenchman decided United's home meeting with Burnley with the match's only goal, then with a half volley outside the box.
The victory, the team's eleventh in 13 games, means that United took back the league lead from Leicester.
Victor Nilsson Lindelöf was not in United's squad.