When was the last time a goalkeeper scored a goal in the English Premier League?
As of early 2023 the last goal of a goalkeeper scoring in their opponnent net was Alisson Becker on the 16th May of 2021 in the 95th minute of the Match Liverpool against West Bromwhich Albion, making the final score 2-1.
Excellent. How is it possible for a goalkeeper score a goal?
A goalkeeper can score just like any other player. Most goal keepers in their careers will score with penalty kicks, but it's also typical for them to score at the very end of the game when the entire team is trying a last ditch to score a goal before the time runs out.