Chelsea scored three times in the first 17 minutes as they thumped Newcastle to send the Magpies back into the relegation zone on goal difference.
Diego Costa opened the scoring when he slid home Willian's pass.
A mistake by Rolando Aarons let Pedro make it 2-0 and Costa played in Willian to score from close range.
Cesc Fabregas set up Pedro for his second and Bertrand Traore turned in Cesar Azpilicueta's cross, before Andros Townsend's late consolation.
Chelsea's interim manager Guus Hiddink remains unbeaten in 12 games in all competitions, and his side are now unbeaten in their past 10 Premier League games.
The only thing to spoil their evening was an injury to captain John Terry that saw the centre-half limp off before half-time and leave him as a doubt for Tuesday's trip to play Paris St-Germain in the first leg of their last-16 Champions League tie.