The Park City Fire District was called to the Ruth’s Chris Steakhouse on state Route 224 and Thaynes Canyon Drive around 4:30 p.m. Thursday for a kitchen fire at the restaurant.
Battalion Chief Sean Briley said fire crews arrived to find a lot of smoke.
Employees said they believed the fire was contained but crews found flames above the ceiling that took several hours to put out.
Fire crews are investigating what sparked the blaze in the cooking area.
No injuries were reported and damage costs are unknown at this point.
The restaurant has not said when it plans to reopen.