Craig Bannister grabbed his 37th and 38th goals in all competitions of a brilliant season with the decisive intervention as Khalsa moved into third spot in the league.
Two goals â€“ the second one of real quality â€“ in eight second half minutes, did the damage in what was a muddy slugfest between two of the divisionâ€™s heavyweights.
Simeon Townsend gave the home side the lead on five minutes, firing home on the counterattack through the legs of keeper Bradley Catlow.
Highgate were straight on the response, Curvin Ellis hitting the post after a neat bit of link up play with Brendan Murphy.
And the equaliser came on 12 minutes, an excellent whipped and swerving freekick by Tom Lacey causing havoc in the Khalsa penalty area and enabling Aaron Brown to head past a bewildered Mihai Gherasim.
Carlo Franco – absolutely brilliant at full-back – had to take the proverbial one for the team by impeding Ellis as he surged towards the penalty area, receiving a yellow card and a blasted free kick in the midriff for his efforts
Murphy â€“ who was a thorn in the side of Khalsa throughout â€“ then hit the crossbar with a brilliant lob from 25 yards from a long clearance.
Highgate went ahead on 25 minutes, Murphy firing a great effort high past Gherasim after some fine work by Ellis in the danger zone.
Khalsa equalised on 36 minutes, the strength and persistence of Marvin Nisbett seeing him fire home after a crowded and frantic spell of defending.
It was Nisbett who did the damage in the early stages of the second half as Khalsa took the lead for a second time.
His pass to Bannister saw the prolific strike fire a drive past Catlow from just outside the penalty area.
Khalsa almost extended their lead, Mensah Kinch â€“ enjoying a purple spell at the start of the half â€“ curling a pass with the outside of his foot to Townsend who charged through the Highgate defensive ranks, only for his shot from the angle to trickle agonisingly wide.
Bannister then grabbed what will go down as Khalsaâ€™s goal of the season, picking the ball up on the wing, drifting past two players and curling a shot from the corner of the area over Catlow and into the net.
Catlow then produced a brilliant save to deny Nisbett and keep Highgate in the game, a Kinch ball evading several players before finding the striker at the far post.
Dave Meese wrapped up the scoring on 80 minutes, lashing home from a corner to put the game beyond reach.
Gherasim pulled off a fine save in the dying stages to deny Lei Brown and give Khalsa a win which will be very welcome at the Aspray Arena.
Sporting Khalsa: Mihai Gherasim; Carlo Franco, Tim Jackson, Joe Rogers, John Hill; Dave Meese, Lee Wherton (Captain), Mensah Kinch (Matt Martin), Craig Bannister; Marvin Nisbett (Ben Hadley), Simeon Townsend (Chad Birch).
Man-of-the-match: Carlo Franco – don’t normally comment on the MOTM performance, but, blimey, Carlo had a blinder.