An Akubra-wearing thief held up a Brisbane cake shop on the weekend.

The man walked into The Cheesecake Shop on Ipswich Road at Annerley about 6.45pm on Sunday.

He threatened the store attendant with a piece of wood and demanded cash.

The attendant complied and the man fled with cash.

The thief is described as having a slim build, with black hair and a dark moustache.

He was wearing a long-sleeved white shirt, dark blue jeans, and a dark Akubra hat. He was also carrying a dark-coloured backpack.

Investigations are continuing.

Anyone with information is asked to contact Crime Stoppers on 1800 333 000 or crimestoppers.com.au.