Former Arsenal striker Usman Dembele opened the scoring with a header from the cross, before scoring again on the left-footed chip in the second half.
Among these goals, Ronald Araujo Dembele headed in from the corner, before Aubameyang assisted Feren Torres into the back.
Barca could have won by a much larger margin if they had been more clinical in front of the goal.
Yet they have surpassed their expected goal figurXG es. Barca's score was 2.96, Real's 0.75.