It was a mistake by Barcelona defender Pau Cubarsi that had led to the early penalty transformed by Mbappé within the first Madrid purpose, and Mbappé added one other purpose in a breakaway to offer the guests a 2-0 lead.
Each groups had targets disallowed within the remaining minutes.
Barcelona is unbeaten in 16 straight league matches, with its final loss coming towards Atletico Madrid late final 12 months.
Madrid, eradicated by Arsenal within the quarterfinals of the Champions League, had received 4 in a row within the league.
Reporting by The Related Press.
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