the hosts' play as Rooney and Danny Welbeck combined superbly in attack while Phil Jones got forward regularly, forcing one saving tackle by Karl Henry after Welbeck robbed Jamie O'Hara.
A second goal was no less than United deserved with Chris Smalling, Carrick and Nani all involved in the build-up that led to Rooney's firm strike catching Hennessey out and beating the keeper's despairing right hand. Entertaining the fans with some enterprising play, the Reds ensured the one-way traffic continued all the way to the interval. Rooney forced a diving save out of Hennessey and Welbeck saw a shot deflect off target after being found by Nani. The final effort of the half came from the eye-catching Nani, who could only float a tame shot at Hennessey after some more magical approach work.
However, Wolves caught the Reds cold at the start of the second half to reduce the arrears. Matt Jarvis did well down the left and his deep cross was met by Fletcher, who outjumped Patrice Evra and squeezed his header between Jonny Evans on the line and the bar to make it 2-1.
After going out of two cup competitions recently and being criticised from all quarters, this was another test of the team's mettle. The answer was emphatic as United simply piled forward with renewed vigour and soon restored a two-goal advantage. Valencia was really positive in his play when collecting a Jones pass and driving into the danger zone before firing in a cross that was touched home by the alert Nani.
Evans had a couple of openings when moving up from defence while Valencia displayed his confidence by again hurtling towards goal, only to send his finish wide. After receiving another pass from Jones, the right-winger then delivered another accurate cross and Rooney showed textbook technique to superbly volley a difficult opportunity past Hennessey.