The pause before the breaker trip is a bit odd. The oven element circuit all connects to the P3 connector on the main board, so if you unplug it then start a bake cycle, then you could see if the problem is associated with one of the elements, or the control itself. Short circuits can be a pain to locate and often require many trips to the breaker box, but you can at least isolate the different components until you find the culprit. Make sure it is the oven only and not the surface units or the cooling unit. If they work fine, then you are back to the P3 connector and the heating elements.