After a draw against Charlton and a loss versus Stoke, Fulham were desperate for points in order to keep within a couple of the top two.
They got all three against Luton in a 3-2 victory thanks to Mitrovic, who scored his ninth, 10th, and 11th goals of the campaign.
In typical fashion for him, all of his goals were scored from inside the area, with the first coming via a superb touch and ferocious finish into the roof of the net from just inside.
His second was a predatory finish from close range, while he completed his hat-trick in the 67th minute by getting ahead of his marker to glance a header beyond the goalkeeper following a nice set-piece routine from the hosts.
He made three ball recoveries, too, which sums up his presence as a real threat for the Luton defence all night.