Christian Erisken - the benefactor of a sublime Dele Alli back-heel assist - added to the lopsided score line, ensuring Everton walks away from Wembley embarrassed, and with a collective tail between their legs.
Check out this lovely turn and run from Son before crossing to Harry Kane for Tottenham's second goal.
The Toffees are without a win in four and have suffered defeats in their last two league games as they head to Wembley.
For much of the match, however, Kane had played second fiddle to Son Heung-min, who broke the deadlock after 26 minutes and set up Kane's first shortly after the interval.
Everton tried to find a way back into the match and, with five minutes remaining until the break, Tosun got down the left but produced a disappointing cutback with colleagues well placed. Although it was off target, it was turned in expertly by Son.
"Tottenham are a big club, they are in the top four or five clubs in this country so I would think he's quite happy".More news: British govt says Trump cancelled United Kingdom visit for fear of protests
The South Korea star brilliantly turned past Jonjoe Kenny and surged down the left before firing in a low cross for Kane to move level with Sheringham with a simple finish, though replays suggested he had strayed offside.
But they made it 3-0 on the hour as Kane was again the man in the right place and his scuffed finish bounced beyond Pickford.
That means Kane will not be leaving and Spurs will fend off bids for the likes of Alli, Eriksen, Danny Rosem Toby Alderweireld etc. Subs: Lennon 5, Calvert-Lewin 5, Schneiderlin 5.
But equally, that means Son will not be going anywhere - and the next thing Tottenham need to do is give him a whacking new contract.
In the 15th minute, Eriksen - who was recently named Danish footballer of the year for the fourth year in a row - whipped in a free-kick to the front post which was glanced on by Son but the ball was diverted just too high over stranded goalkeeper Jordan Pickford's crossbar.