Spurs equalled their club record of six straight Premier League wins with ease as they set about dismantling their visitors, amassing 10 shots and 78% possession by half-time. Kane smartly lifted Christian Eriksen's neat through ball in off the upright, before Eriksen's own effort went in via Gareth McAuley.
England striker Kane - who became a father this week - was a continued threat and he turned in Kyle Walker's low cross, before completing his treble with a low finish across Ben Foster.
There was one black mark for Spurs in the form of an injury to Jan Vertonghen, which boss Mauricio Pochettino said "looks bad". But his side are now showing real momentum and they simply outclassed Tony Pulis' Baggies, who stay eighth.
Source: BBC Sports