The young Frenchman has had an excellent start to the season, scoring an incredbile 11 goals and making 5 assists in all competitions so far this season for the French champions.
However, him and Adrien Rabiot were left out of the starting XI for 'Le Clasique' on Sunday because of a disciplinary issue.
Mbappe and Rabiot arrived late for a team meeting before the game against Marseille because they were watching 'El Clasico', in which Barcelona triumphed 5-1.
Thomas Tuchel decided to start with the 19 year-old on the bench as a punishment for this, but turned to him in the second half as the Parisians laboured at Stade Vélodrome.
He repaid his manager by scoring a second goal for his side, sealing a tricky 2-0 win to take the side's winning run to 11 consecutive games.