Watkins' winner sparked a wave of reaction on social media, with plenty calling for the 28-year-old to start ahead of Kane in Sunday's final.
"Watkins just put us in the final. If he doesn't start it's an absolute farce. Kane deserves to be benched," wrote @markgoldbridge on X.
@ChmBran1 added: "Watkins is England's best striker by far."
Aston Villa fan @mattlyynch said: "An Aston Villa striker has sent England to the Euros final. Unbelievable. Oliver Watkins. Put some respect on his name. A world class striker."
Former England striker Gary Lineker was clearly happy. "Yesssssssss! Ollie Watkins, you absolute beauty," he wrote.
Meanwhile, Watkins' club Villa posted: "OLLIE WATKINS. IT'S WHAT HE DOES."