The hosts took the lead when Jonathan Afolabi powered the ball past Hugo Keto, but we staged a stunning second-half comeback to claim all three points.
Stephy Mavididi squeezed an effort in at the near post, before Eddie Nketiah rounded goalkeeper Adam Parkes and slotted in just two minutes after replacing Chuba Akpom.
The scoring was completed when Chris Willock curled a shor inside the far post with five minutes remaining.
Cohen Bramall was handed a start at left-back - his first appearance for the club - with Chiori Johnson, Krystian Bielik and Ben Sheaf completing the back line.