I have been experimenting with quite a few different blends of flours, the addition of xanthum gum, and after some trial and error I like the following blend the best so far. It’s pretty much the same recipe as found on this awesome site, with a couple adjustments for texture and taste to that of a store-bought gluten free flour, and the savings when making your own gluten free mixes is substantial!
To make a good supply of Homemade All-Purpose Gluten Free Flour you will need:
6 cups of white rice flour ( I have found this to be the most affordable of the gluten-free flours that I am able to buy in bulk at a local grocery store)
6 cups of cornstarch
2 cups of Masa Mix (make sure it is the kind with only corn flour, no wheat flour-found in the ethnic cooking section of your local grocery store)
4 cups of sorghum flour (I prefer sorghum for it’s sweeter flavor and light texture for baking)
Blend together and store in an air-tight container, use in place of any of your baking that calls for regular flour. I originally found this recipe here and am so glad I came across some ideas on making my own mixes. It is an awesome source of information for gluten free living. Happy Baking!