<<Disclaimer: Verify this information before applying it to your situation.>>

Thank you for all who responded.  The overwhelming consensus was to use the
Gluten Free Pantry's brownie mix.  A couple other people said to use Pamela's
and a couple of people suggested using dried out brownie crumbs and mixing
with melted butter, then patting into the pie plate.  I will update and let
you know how they turn out  -- along with the recipe for all those who
requested it.

Krista-Dallas, TX