An impressive Connor Taylor scored the second with a nice touch from a low Andrew Cooper cross midway through the half, before Hughes showed how valuable he is just before the break.
Frustrated at times with balls played too far in front, he jagged on to a nicely waited touch pass to play himself through a flat line.
The finish was at once class and routine; one more touch past the besieged Pascoe to prove Hughes has the ability to play as a classical striker as well as an overlapping creator out wide.
The second half reached no great heights, with the home side conceeding a penalty in between a well-taken sniping goal from Cooper and a carbon copy Hughes effort through the middle for a hat-trick in front of WaiBOP United coach Peter Smith.
Goalkeeper Tom Pamment let the first one past him in weeks, but cut a jovial figure after a match that included a number of assured low diving saves.
Belvedere Group Tauranga City United 5 (Jerahl Hughes 3, Andrew Cooper, Connor Taylor) Onehunga Mangere United 0