The reigning Ligue 1 champions never looked like surrendering a crown they have now secured in four successive seasons.
They have become the first club to achieve such a feat as their dominance of domestic football continues.
Edinson Cavani bagged a brace for Unai Emery’s side, while Angel Di Maria and Julian Draxler were also among the goals.
PSG will now be looking to complement their cup success with league glory.
They sit three points behind Monaco at present, but there are still eight games to be played.
If they were to emerge victorious, then the capital giants would lift the trophy for a fifth year in a row.