Four fire engines and around 25 firefighters were called to a house fire on Addison Road in Enfield.
Part of the ground floor of a two-storey house was damaged in the fire.
Two people left the property before the Brigade arrived.
One male and female were treated on scene for smoke inhalation by the London Ambulance Service.
The Brigade’s Fire Investigators believe the fire was accidental and was caused by cooking that was left unattended.
A London Fire Brigade spokesperson said: "Fires are more likely to start in the kitchen than any other room in the home.
"Cooking should never be left unattended on the hob or grill - if you have to leave the kitchen then turn off the heat.”
The Brigade was called at 1738 and the incident was over by 1814. Fire crews from Enfield and Edmonton fire stations attended the scene.
How to prevent cooking fires
- Avoid leaving cooking unattended
- Don't cook if you are tired, have been drinking alcohol or taking medication that might make you drowsy
- Take care not to lean over hot hobs and keep tea towels and cloths away from the cooker and hob
- Be careful to keep the oven, hob, cooker hood and grill clean to avoid a build-up of fat and grease, which could ignite and cause a fire
- Use spark devices to light gas cookers - they are much safer than matches or lighters as they don't have a naked flame
- Double check the cooker and hob are turned off when you've finished cooking
- Check toasters are clean and placed away from anything that can catch fire
- Never put anything metal in the microwave
- Never use a barbecue indoors or on a balcony - burning or smouldering fuel can cause carbon monoxide poisoning
- Supervise children and pets in the kitchen at all times and keep matches and saucepan handles out of reach.
