The 33-year-old veteran put an absolute hurting on Australian prospect Rob Wilkinson with a devastating second-round TKO.
Bahadurzada unloaded all hell on Wilkinson as the 26-year-old stumbled around the Octagon.
The Afghan fighter jumped on top and rained heavy shots until the referee jumped in for the stoppage.
Bahadurzada (23-6-1 MMA, 3-2 UFC) has just two fights since December 2013, but both are wins. Wilkinson (11-1 MMA, 0-1 UFC) loses for the first time as a pro.
With this win, Bahadurzada reenters the mix at both 170 and 185 pounds. If he can stay healthy, Bahadurzada is powerful enough to do some damage up the divisional ladder, evident by his monstrous finish in Rotterdam.