The Poland striker gave Jurgen Klopp's men an early lead and, after Cristiano Ronaldo equalised late in the first half for Real Madrid, Lewandowski struck three times more in the second half.
Following 2012 finalist Bayern's 4-0 hammering of Barcelona last night, it was a further indication ahead of next week's return legs in Spain that the balance of power in European football is shifting.
It has been horror week for Spanish football, but what about England?
But, as we couldn't get a side in the semi-finals ... where does that put the Premiership?
SKY TV claim it's the best in the world, but is it even in the top three in Europe?