We have tried out quite a few blends and all have worked great. Some blends have xantham gum as an ingredient, some do not. We haven't found this to make a difference for this recipe. We're fans of Bob's Red Mill gluten free all purpose baking flour, but we have also used lesser known brands and they have all worked great. The key factor is that it must be a u003cemu003eblendu003c/emu003e that is meant to replace regular flour in baking.