B737NG flight crew reported diverting after a fire started in the forward galley oven.

Attributes
ACN	1368474
Time
Date	201606
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B737 Next Generation Undifferentiated
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Galley Furnishing
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 245 Flight Crew Type 6397
Person 2
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Type 6705
Events
Anomaly	Aircraft Equipment Problem Less Severe Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor

Narrative:

Leveling at FL340 we smelled a burning odor coming from first class. In the next few seconds the odor intensified and smoke filled the cockpit. All three crewmembers donned our oxygen masks and initiated our emergency procedures. I was the pilot monitoring and was notified by the first class flight attendant that there was a large amount of smoke from the oven. I told her to pull the circuit breakers and to let me know if the smoke subsided. I told my first officer to immediately return back to the departure airport and to let ATC know what our situation was. I ran the QRH for smoke in the cockpit and smoke removal. During that time the smoke subsided; but there was still a pungent odor coming from first class. We were given emergency priority into the airport. We landed without further incident. The fire department rescue inspected our oven and found hot spots; but no further immediate fire. We taxied to the gate without further incident.

Original NASA ASRS Text

Title: B737NG flight crew reported diverting after a fire started in the forward galley oven.

Narrative: Leveling at FL340 we smelled a burning odor coming from first class. In the next few seconds the odor intensified and smoke filled the cockpit. All three crewmembers donned our oxygen masks and initiated our emergency procedures. I was the Pilot Monitoring and was notified by the First Class Flight Attendant that there was a large amount of smoke from the oven. I told her to pull the circuit breakers and to let me know if the smoke subsided. I told my First Officer to immediately return back to the departure airport and to let ATC know what our situation was. I ran the QRH for smoke in the cockpit and smoke removal. During that time the smoke subsided; but there was still a pungent odor coming from first class. We were given emergency priority into the airport. We landed without further incident. The fire department rescue inspected our oven and found hot spots; but no further immediate fire. We taxied to the gate without further incident.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.