He opened the scoring after 18 minutes before adding further strikes ten minutes before half-time and immediately after the break.
Malen then completed the 5-0 rout with two penalties in the final seven minutes.
It takes the forward's total to ten this season, which included a goal on his senior Netherlands debut against Germany this month.
Malen was part of Arsenal's academy between 2015 and 2017.
Earlier this month, Malen admitted he still bristles over criticism from his time at Arsenal.
Malen was branded overweight by former Arsenal youth chief Andries Jonker, now in charge of Telstar, during his time with the Gunners.
"I heard him say that I came in too fat. That surprised me," Malen recalled to AD.
"They had been working at Arsenal for two months when I came. Then of course you are not immediately at the same level.
"I was not fit yet, but too fat? No."