We have tested this recipe with oat flour and almond flour.  You could use other gluten free flours like chickpea also.  However, if you use all-purpose flour, we recommend that you make in a skillet instead of in a blender or food processor so that the flour actually gets cooked and you eliminate the risk of salmonella.   Alternatively, you could heat treat just the flour and then process in a blender. Follow the steps for heat treating flour here.