Kylian Mbappe scored a hat-trick for Los Blancos but Raphinha's double and goals from Lamine Yamal and Eric Garcia gave Barcelona a seven-point lead on reigning champions Madrid with three matches remaining.

Hansi Flick's side were knocked out of the Champions League in the semi-finals by Inter Milan on Tuesday and risked their season collapsing if they were beaten by Madrid, but they resisted after Mbappe's early brace.

Barcelona battled back to claim a fourth Clasico victory from four meetings this season, showing their dominance over Carlo Ancelotti's side.

Real Madrid had made the perfect start to what is expected to be the Italian coach's final Clasico at the helm.

Mbappe earned a penalty when he was scythed down by Barcelona goalkeeper Wojciech Szczesny, although the Catalans complained in vein the French forward was offside in the build-up.

The striker beat Szczesny, who dived the right way and got his fingers to it, but could not keep it out.

In the 14th minute Mbappe doubled Madrid's advantage with a lethal finish after Vinicius Junior played him through, with Barcelona complaining again about a perceived foul on Yamal earlier in the move.

It was his 26th La Liga strike, taking him past Barcelona's Robert Lewandowski on 25 at the top of the scoring charts, and his 38th of the season across all competitions, beating Ivan Zamorano's club record of 37 in a first season with Los Blancos.

Just as they have done on so many occasions this season, Flick's spirited young Barcelona fought their way back in front with a stirring comeback.

Thibaut Courtois tipped Gerard Martin's drive over, and from the corner Eric Garcia headed home Ferran Torres' flick-on.

Torres flicked wide from close range with an improvised effort and Fede Valverde was booked for a crunching tackle on whirlwind teenager Yamal.

Madrid could not stop the 17-year-old star from levelling with a cultured bending effort beyond Courtois after Torres laid the ball off to him in the box.

- Raphinha brace -

Two minutes later, Raphinha sent Barca ahead, with Pedri threading a pass through for the Brazilian winger to drill home.

Raphinha headed over from a brilliant Yamal cross with the outside of his boot, something of a trademark for the Spain international.

Mbappe thought he had won another penalty when he fell under pressure from Frenkie de Jong but VAR revealed an offside in the build-up.

Moments later, Raphinha netted his second, picking Lucas Vazquez's pocket on the edge of the area, exchanging passes with Torres and beating Courtois.

Mbappe netted from an offside position before the break, bringing a rollercoaster first half to a close.

Yamal had a goal ruled out for offside early in the second half as Barcelona looked to put their arch-rivals to the sword.

Flick brought on Alejandro Balde and Andreas Christensen, with the latter cutting out a dangerous ball as Vinicius looked for Mbappe.

Next time around the Brazilian found his man, with Mbappe slotting home his hat-trick as he and Vinicius broke in behind Barca's high line.

Barcelona appealed for a penalty when Aurelien Tchouameni blocked Torres' shot with his arm, but after watching the incident again the referee decided not to award a penalty.

Real Madrid substitute Victor Munoz might have levelled late on but fired high and wide when sent through, and Szczesny denied Mbappe, who had another strike ruled out for offside.

Barcelona thought they had wrapped up their win with a superb Fermin Lopez solo effort but it was harshly disallowed for handball against the midfielder.

Madrid had no time left to fight back though, and Barcelona, who last won the league in 2023, could seal the title as early as Wednesday, should Los Blancos stumble against Mallorca.