Surveillance video shows the thieves use what appears to be a hammer to smash through the front door of Dear Margaret.
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Three men went inside, and one of them grabbed the restaurant's cash register.
It happened around 1:45 a.m. near Lincoln and Wellington.
The owners said it is the second time in six months that they've been hit, and that other businesses along the block were targeted.
"Unfortunately, we were also broken into in February, of this similar situation where the front door was crashed through, and the cash box was grabbed," said owner Lacey Irby.
Irby said the thieves got away with $1,200 on Tuesday.