Edinson Cavani and Neymar scored either side of half-time as Unai Emery’s men rocketed nine points clear at the top.
Mbappe, whistled throughout by the home fans, was in a forgiving mood, the teenager incredibly wasting four clear-cut chances before he inadvertently deflected in a late consolation for the hosts.
Cavani was less generous in the first half as he spared his team-mate’s blushes by stabbing in the opener inside 20 minutes.
Mbappe’s ongoing profligacy plagued PSG after the restart but it ultimately proved inconsequential to the result, which Neymar sealed by winning and scoring a penalty.
Paris Saint-Germain were stunned by the performance of Monaco last season as they lost their Ligue 1 crown to the upstarts from the principality, but on Sunday they went a long way to ensuring that come May they will be France’s top dogs once again.
If there were any doubts over just how strong this PSG side are, they were dispelled at Stade Louis II, where they ran out 2-1 winners without really looking that they were especially extended.
Goals from Edinson Cavani and Neymar secured the points, but the gulf between the sides was greater than that displayed on the scoreboard…