Firefighters were called to a pan fire inside a flat over a Premier shop in Clayton-Le-Moors.
The blaze was started when hot oil in a pan caught fire. A crew from Hyndburn fire station attended the building on Whalley Road and used four breathing apparatus, two hose reel jets and a fan to clear the smoke.
The incident happened at around 8.45pm on Sunday, August 30 and all the occupants were out on arrival of the fire crew.
No injuries were reported.