Two men suffered minor burns when fire broke out in the kitchen of a flat in Lutterworth on Saturday evening.
Fire fighters were alerted by neighbours who saw smoke coming out of the window of the apartment in George Street shortly before 6pm.
The men were treated at the scene for burns by paramedics and one was taken to hospital suffering from the affects of breathing in smoke.
A fire service spokesman said: "The cause of the fire was an unattended pan. Fire fighters used a carbon dioxide extinguisher to put out the fire."
He said there was moderate fire damage to the kitchen and smoke damage to the flat.