The Bear and Beignet in Kettering Road was targeted overnight.
A statement on their Facebook page said: “We are sorry but due to some spineless idiot we cannot open today, we came in this morning to see we have been broken into.
“We are waiting for the police and we can’t touch anything.
“We will keep you posted, please share.”
A police spokesman confirmed the incident had been reported to them but was unable to give further details at this stage.