Dove Wome opened the scoring in the fourth minute, and forced the second, an own goal from Limbikani Mzava, three minutes later, while Khama Billiat added a brace.
Patrick Tignyemb was at fault for both of the opening goals. First, his poor clearance allowed Wome to fire a low ball into the back of the net.
Soon after, Wome’s set-piece took a deflection off Mzava’s head to beat him at his near post.
Billiat nearly made it 3-0 on 24 minutes, when his lob sailed just over the crossbar.
Seconds later Ruzaigh Gamildien tried a long range shot that went narrowly wide.
Billiat volleyed home from Bryce Moon’s high cross on the byline to put the score beyond doubt on the half-hour mark.
The Zimbabwean almost had a second when he hit over the crossbar from three yards out, but was blown for offside anyway.
And Billiat made it 4-0 just three minutes into the second half, after Malajila held the ball up nicely before tapping it through to his red-hot teammate, who slotted past Tignyemb.
Joel Mogorosi had a shot comfortably saved by Kennedy Mweene on 77 minutes, in what was the goalkeeper’s first real touch of the match.
As the game drew to a close, the pace drifted off and Sundowns went on to extract revenge over their Telkom Knockout loss against Celtic in the Final last season.