The Champions League holders were rarely tested against the Chinese and Asian champions before a sparse crowed in Morocco with Franck Ribery (40), Mario Mandzukic (44) and Mario Gotze (47) netting in a one-sided contest.
Bayern hit the post and bar several times as the opposition goal led a charmed life, but Bayern's three-goal burst prior to and after half-time knocked the stuffing out of Guangzhou, who spent large swathes of the evening defending.
Ribery drove a volley into the net for the opening goal before an unmarked Mario Mandzukic nodded Thiago Alcantara's cross into the net for the second goal seconds before the break.
The second half was barely underway when Mario Gotze unloaded a shot from distance high into the net with the besieged goalkeeper Zeng Cheng failing to get across in time to nudge the shot over the bar.
Guangzhou had one notable chance before Bayern struck for a third time with Philipp Lahm racing back to make sure Muriqui could only knock an effort into the side netting.
For the record, Toni Kroos hit the bar with Ribery seeing a couple of efforts come back of the frame of the goal before Zeng Cheng somehow tipped a Gotze effort onto the bar with the Bayern substitutes all enjoying a rueful smile wondering how the ball managed to evade landing in the net.
The best of Europe will face South American champions Atletico Minerio or African winners Raja Casablanca in Saturday's final.
They contest the second semi-final in Marrakech on Wednesday evening with Bayern chasing a fifth title of the caledar year having carried off the Champions League, European Super Cup, Bundesliga and German Cup amid a glorious haul under Jupp Heynckes and Guardiola.
MAN OF THE MATCH
Mario Gotze - Impressive outing from the Bayern midfielder. Scored one goal, but could have had more on the evening.