After winning the Champions League four times with Real Madrid, much was expected from Bale on his return to Tottenham, where he had twice won the Professional Footballers’ Association Players’ Player of the Year Award before moving to La Liga.
However, after a couple of disrupted campaigns, Bale was carrying an injury when he rejoined Spurs in September on a season-long loan deal from Real and has struggled to build up a regular run of matches.
But his recent form has shown glimpses of what Tottenham fans would have hoped to see and, following goals in both legs of the 8-1 aggregate win over Austrian side Wolfsberger in the Europa League last 32, he was given only his third Premier League start of the season on Sunday.
Before the match, Mourinho said Bale “was happier than ever” and it took the 31-year-old only 70 seconds to score when he had got in between the Burnley central defenders and steered Son’s low cross past Nick Pope in the first chance of the game.
Kane shot just wide and Moura was denied by Pope, before the England keeper was beaten again after 15 minutes.
A brilliant long ball from Bale, 30 yards from his own goal, released Kane and the forward scored his 14th Premier League goal of the campaign, although his strike took a deflection off James Tarkowski to take it over Pope.
Tottenham won this fixture 5-0 last season and it then became a question of how many they would score.
The third came when Reguilon’s cross was inadvertently flicked on by Tarkowski and Moura took a touch to set himself before firing into the net.
Bale, in arguably his best performance of the season, scored again with an excellent curling finish following a storming run forward from Son, before the Welshman was substituted after 69 minutes.
After the match, Bale said: “I’m delighted with the goals and the assist and whatever I can do for the team.
“I’ve been happy all season. In the dressing room I feel comfortable and I’m having fun. I’m happy and I’m sure it’s showing on the pitch.
“I have been building up a little bit to get fully fit – I felt comfortable and my form is coming back. It’s nice to help the team.
“It’s been a while so I just continue to work hard. I know you get criticism but I am experienced enough to keep my head down, not say anything stupid and keep plugging away.“
Only excellent goalkeeping from Pope denied the hosts a bigger win as he made fine saves from Kane and Son on a tough day for Burnley.
Tottenham have finished in the top six in the past 11 seasons. They started this match in 10th, although the win took them back above north London rivals Arsenal and also ahead of Aston Villa into eighth.
Credit: BBC Sport