Nabil Bentaleb opened the scoring with his first goal for the club in the first half and Nacer Chadli bagged the crucial second just 30 seconds into the second half.
Harry Kane slotted home his 13th of the season for 3-0 and Roberto Soldado completed the scoring.
That victory set-up a semi-final over two legs against Sheffield United for the right to play either Chelsea of Liverpool in the final at Wembley.
It was one of our best displays of the season
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