The striker scored all three goals in a 3-0 victory over their South Yorkshire rivals.
His first was an incredible strike just after the half-hour mark - coming from in front of the ball to latch onto Nana's lay-off and sweep into the roof of the net from 22 yards.
Maris made it two with a great individual effort, dashing past three defenders before tucking home a crisp left-foot finish just before half time.
On the hour, Maris peeled away from his man to latch onto Chadderton's clearance and loft over the 'keeper for his hat-trick.
The Under 18s are next in action on Saturday, away to Bristol City.