As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN FLIGHT ATTENDANT ATTEMPTED TO UTILIZE THE OVEN A THICK WHITE SMOKE DEVELOPED FROM THE ELECTRICAL WIRE CONNECTION AREA AT BACK WALL. SMOKE SMELLED OF ELECTRICAL BURNING AND DID NOT EMANATE FROM BURNING SPILLAGE INSIDE THE OVEN. AN INOPERATIVE OVEN FAN WAS CONFIRMED. ELECTRICAL CONNECTIONS WERE FOUND TO BE FREE OF DEFECTS. THE OVEN WAS REPLACED THE NEXT DAY AT MSP. THE AIRCRAFT HAS RETURNED TO SERVICE.