The match was delayed by 25 minutes after Verona were caught in traffic on their way to the stadium, but still managed to start brightly and took the lead early on.
Fabrizio Cacciatore was the man who broke the deadlock and in style, shifting inside before finding the far corner with a measured drive from 20 yards.
Juan Manuel Iturbe then doubled Verona's advantage six minutes later, beating three defenders as he created space to smash home.
Verona quickly regained control, though, and restored their two-goal cushion just five minutes later through Luca Toni, who tapped home after fine approach play in the box from Iturbe.
In stoppage time Verona added a fourth to make absolutely sure of an eye-catching away win, with Jorginho curling home on the counter.