The idea is to DISTRIBUTE the force applied to the bottom of the pan. It would be best to use a section of 2 x 10 or 2x 12 long enough to cover the entire bottom area of the pan. Don't use anything thinner than a two by because it won't be stiffe enough to distribute the load properly.
The smaller the area of contact, the more concentrated the load and the higher risk of damage. Spread out the load and you will have no problem.