Have you tried using shortening in those recipes instead of margarine?  I
know
you can do that in cookies very easily.  You might need to add just a little
extra salt to make up for the salt in the margarine.  I know I have several
cookie recipes that call for shortening instead of margarine.

Sandy

> It's very frustrating
> for soy allergies with desserts, as most of the cookies (and others)
> list to use milk- and soy-free margarine. It doesn't exist. They
> don't believe in being allergic to soy lecithin and oil.