Real had failed to win any of their previous three matches, with the Santiago Bernabeu faithful reacting furiously as they scrapped past Schalke in the UEFA Champions League on Tuesday despite a 4-3 defeat on the night.
Coach Carlo Ancelotti has had his position called into question in the Spanish press, while Bale - without a goal in nine matches before Sunday - also found his recent performances to be under heavy scrutiny.
Despite once again enduring a mixed reaction from the home support, Bale was influential throughout an impressive first-half performance and broke the deadlock after 19 minutes before turning home Cristiano Ronaldo's strike as the interval approached.
The result means Real head into next weekend's pivotal Clasico showdown at leaders Barcelona just a point behind their great rivals at the top of the table.
Real's front three were all involved when the opening goal arrived - Benzema crossing from the right for Ronaldo to have an acrobatic attempt cleared off the line, only as far as Bale who rifled home right footed.
Tono made a vital interception to deny Ronaldo - who cut a frustrated figure throughout the match - before Bale saw a rasping cross deflected against the crossbar.
While Bale was the architect on that occasion, he did not know too much about his second goal three minutes before half-time when Ronaldo drove Dani Carvajal's cutback goalwards and the shot decisively clipped the ex-Tottenham man's instep.
Real's France striker almost got the goal his efforts deserved in improbable fashion after 65 minutes when he backheeled a volley from Ronaldo's right-wing cross over his shoulder and against the upright.
To their credit, Levante avoided any further damage as the match meandered to a close - Real substitute Javier Hernandez spurning a free header in the final minute - and they are third bottom and without an away win since September.
