Rose McGowan -- House Fire Was My Own Damn Fault

Rose McGowan is finally revealing the cause of the fire that nearly burned down her L.A. mansion – herself.

The “Charmed” actress was leaving Chateau Marmont with her friend/savior Courtenay Semel this week – when she ‘fessed up … admitting that her own kitchen incompetence was to blame for the Sept. 30 emergency.

On the night of the blaze, Rose tweeted about the incident – saying her eyes were burning and that her home smelled like “burnt metal” from the flames. She also thanked Courtenay for calling the fire dept. and “saving my house.”