Chicharito, 23, signed for United from his hometown club of Chivas de Guadalajara in Mexico in July 2010 and made an immediate impact, scoring on his debut in the Community Shield against Chelsea. He has gone on to make 55 appearances for United and score 23 goals.
Sir Alex Ferguson told ManUtd.com he is delighted by the news, saying: “The last player I remember making an impact as big and as quickly as Javier is Ole Gunnar Solskjaer and he reminds me of Ole a lot.
"His talent for creating space in the box and his finishing ability mark him out as a natural goalscorer. Off the pitch, he is a pleasure to manage. He works very hard and is a popular member of the squad.”
The man himself said he was thrilled to have committed himself to the club for a further five years.
“Playing for Manchester United has been a dream come true for me," insisted Hernandez. "I never expected my first year to go so well and I’m delighted to commit my future to United.
"To win a title and appear in a Champions League final was fantastic. I’m looking forward to helping my teammates as we bid to win more trophies for this great club.”