I like using a clean, wet terrycloth towel, on a cookie sheet. . .
Put the pan(s) on the towel, push the towel up around all the sides of the pan(s); cook as usual in a pre-heated oven. Works for me; I love old "beater" bath towels and hand towels.
Just don't use a towel with fabric softener on it--no cake tastes like fabric softener, does it? smileys/smile.gif