Wife making cookies...RV oven keeps going out...

I had this same problem with mine. It turned out that there was too much insulation in the back and it was restricting the exhaust vent, so the pilot worked fine but eventually after the main burner would light it would starve itself of oxygen and go out. The gas valve would then shut off the pilot because it lost flame and the safety valve tripped.

Also, I've found that sometimes the thermostat sense bulb shifs around and hits the wall of the oven, which throws it out of calibration.