Crews from Haslingden and Bacup attended the Blossoms Chinese takeaway, in Bacup Road, Rawtenstall, at around 11.45am yesterday.
Three members of staff were evacuated from the fire, which is believed to have started from a pan of oil.
Two people were taken to hospital suffering from smoke inhalation.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here