The England striker ended his barren spell in the 10th minute of Saturday's match at the Reebok Stadium when he shot past Jussi Jaaskelainen.

And six minutes later Rooney, 21 earlier this week, doubled United's lead with a brilliant curling shot.

Cristiano Ronaldo shot into an empty net eight minutes from time before Rooney completed his treble in the closing stages.

"It's good to be back," said Rooney after helping United stay clear of reigning champions Chelsea on goal difference.

"There has been a lot of talk by a lot of people over the last few weeks saying I couldn't do it any more, so the feeling when the first goal went in was brilliant.

"To finish the hat-trick was nice. I am delighted and happy just to be back amongst the goals again and to have secured the three points in what was a big game for us. I'm really proud and happy with the performance."

Elated United manager Sir Alex Ferguson said: "He was due to score at some point. The longer these things go for strikers, they start to doubt things. When they score their confidence goes up."