gluten-free Flour Mixture "emergency" in Gluten-Free Recipes & Cooking Tips Posted December 22, 2008 · Report to Admin That is a tough one...only because you need so much flour. I might suggest making cookies instead and decorating those? A gingerbread house needs to stand, and I am not sure if you use mostly cornstarch and brown rice flour if that will work. Let us know what happens, if you find that something works. Good luck!!!!