According to police, around 1:30 a.m. two suspects smashed through the front window of the restaurant located at 11901 Southwest Highway.
Palos Park police released surveillance photos showing the suspects grabbing the cash register once inside the restaurant.
One suspect is described as wearing a blue hoodie and black pants. The other suspect is described as wearing a black hoodie, black pants, and white gym shoes.
The suspects drove off in their own vehicle, police said.
No one is in custody.
Police and video technicians are still investigating.