Chelsea ruined Carlo Ancelotti’s return to Stamford Bridge as they romped to victory against Everton to strengthen their grip on fourth place in the Premier League.

Everton boss Ancelotti led Chelsea to the Double in 2009-10 and his first game back got off to a woeful start as Mason Mount and Pedro scored inside the opening 21 minutes.

Former Everton midfielder Ross Barkley released Pedro for the second goal and also laid off for Willian to score with a superb low strike early in the second half.

Moments later Olivier Giroud poked in from Willian’s cross to seal Chelsea’s biggest league win of the season – five days after they beat Liverpool in the FA Cup fifth round.

It gave them a five-point cushion in the Champions League places – seventh-placed Manchester United host Manchester City on Sunday – while Everton remain in 12th.

The Toffees have improved since Ancelotti took charge in December, but they have taken only one point from the past three games – against Arsenal, United and Chelsea.