Real were utterly dominant across the two legs, winning 3-1 at the Camp Nou on Sunday and then 2-0 at the Bernabeu three days later.
What's most impressive about Los Blancos' victory - or, rather, most concerning for Barcelona - is that Cristiano Ronaldo only played 30 minutes across the two legs.
In fact, Real didn't need Ronaldo or Gareth Bale for the second leg, with Marco Asensio and Karim Benzema doing the damage instead.
There are worrying times for Barcelona, who looked toothless in attack without Neymar and only scored through a Lionel Messi penalty.
Even Gerard Pique admitted after Wednesday night's game that he feels "inferior" to Real for the first time, saying: "We are not in the best moment, as a team or a club.
"This a long process and there is room for improvement. We must stay as close as possible and keep moving forwards."
Big change is on the horizon at Barcelona, who have £200 million to play with in the transfer window following the sale of Neymar to Paris Saint-Germain.
Paulinho has arrived for €40 million, while Liverpool's Philippe Coutinho and Ousmane Dembele of Borussia Dortmund are both 'close' to completing £100 million-plus moves.
Barcelona's ageing squad is in dire need of a revamp and it would appear Pique is aware of that fact also.
Footage has emerged from the second leg of Pique looking very angry on the bench after being replaced by Nelson Semedo in the 50th minute (see below).
In an x-rated outburst, the Spaniard apparently said, per Marca: "These guys are performing a f*****g dance around us. Motherf**k."
Pique's words just about summed up how dominant Real were against Barcelona, not to mention how poorly the Blaugrana performed.
While the statistics suggest Barca had their fair share of chances at the Bernabeu, the reality of it is that Messi and co. rarely threatened.
Raphael Varane had Suarez in his pocket all game, constantly outpacing and outmuscling the Uruguayan to stop him from having any impact.
Messi, meanwhile, was powerless as Real ran riot through Asensio - a man who Barcelona squandered the chance of signing in 2014.
Asensio was valued at €4.5 million by his club at the time, Mallorca, whereas Barca were only willing to pay €2.5 million, which allowed Real to swoop in and seal the deal.
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