A B757 FLT ATT REPORTS AN OVEN FIRE WHILE HEATING FIRST CLASS COOKIES. FIRE EXTINGUISHERS AND PBE'S WERE USED.

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I SAW SMOKE AFTER 10 MINS; COOKIES WERE IN OVEN. WHEN I CRACKED THE OVEN DOOR I SAW BLUE FLAMES. I IMMEDIATELY CLOSED THE OVEN DOOR AND TOLD MY #3 FLT ATTENDANT TO CALL THE COCKPIT AND TELL THEM. WE KEPT THE OVEN DOOR CLOSED FOR ABOUT 10 MINS TO SEE IF IT WOULD SHUT THE FIRE DOWN. WE DONNED 2 PBE'S; 2 FIRE EXTINGUISHERS. THE COCKPIT GAVE US OK TO PULL CIRCUIT BREAKER. WE PLACED A BEVERAGE CART ACROSS FIRST CLASS TO KEEP FIRST CLASS PAX OUT. OVEN REMAINED EXTREMELY HOT SO WE USED 2 FIRE EXTINGUISHERS TO FIGHT THE FIRE. I CALLED FOR A 3RD PBE AND EXTINGUISHER FROM THE BACK AND HAD #2 FLT ATTENDANT BRING IT TO FIRST CLASS JUST IN CASE WE NEEDED IT. WE DID NOT USE IT. OVEN COOLED AFTER 2ND EXTINGUISHER. MY CONCLUSION: 1) 2 RACKS OF COOKIES; 1 FULLY LOADED -- HOLES PUNCHED IN TIN FOIL. ONLY 4 COOKIES FULL TIN FOIL; NO HOLES PUNCHED. 2) 4 COOKIE RACKS PLACED ON TOP OF FULL COOKIE RACK. 3) EXTRA TIN FOIL MADE A FUNNEL AND FORCED 4 COOKIES TO TOP OF RECIRC FAN. OR 4) FAULTY OVEN. WE WERE VERY DISCREET AND FIRST CLASS PAX JUST THOUGHT I BURNT THE COOKIES. NO PANIC. MY SUGGESTIONS: CATERING TO EQUALLY LOAD COOKIES ON RACKS AND NO EXTRA TIN FOIL. FIRE ON AN AIRPLANE IS SCARY.