It is your responsibility to contact the restaurant or speak to a manager while there to determine if the food if safe for your or your family. I don’t know if you are reading this in 2020 or 2096 and you have to realize that policies change.
Portland does not have a shortage of fancy donuts. However, you have probably noticed that the famous place with the pink boxes or those super expensive ones that have a star on the box definitely use nuts and peanuts. I was thrilled to find out that the Beaverton location of Sesame Donuts does not use peanuts or tree nuts at all. I spoke to the manager while there, but am sure to still ask every time that I am there. We’ve been there at least a baker’s dozen times so far without incident.