Two masked men stole cash from Spar on Stanton Road in Sandiacre on Friday night.
The men burst into the shop as a staff member was emptying the in-store cash machine at around 9.50pm.
Both men had their faces covered and were wearing dark clothing.
They grabbed cash that the staff member had dropped before speeding off in a car that was parked on Spencer Avenue.
Anyone with information can call police on 101.