Real Madrid beat Barcelona 2-0 on Sunday to wrap up a 5-1 aggregate win and seal the Spanish season's first piece of silverware.
Zinedine Zidane's had a 3-1 lead going into the Super Cup second leg and never looked like relinquishing their advantage.
In-form Marco Asensio bought the Santiago Bernabeu to it's feet with another stunning goal after just four minutes.
Lucas Vazquez then hit the post in a first half dominated by the hosts, before Karim Benzema added the second before the break.
Barça, who had began with a back three, switched back to a four-man defence in the second half and improved slightly, but not enough.
Lionel Messi hit the bar in search of a consolation and Luis Suarez hit the post after Keylor Navas could only parry Messi's drive.