You can find a good selection on Granger.
This link is broken, either the page no longer exists or there is some other issue like a typo.
You can also use a fan limit control, but that is kinda expensive. If you hook the main stove hot lead through the snap switch it will shut it down till it cools off. You just need to mount it so the wires are not an electrical hazard and make sure interrupting the process doesn't cause any problems.
Hope this helps a little.