Who would think that a winner gluten free flour mix of garbanzo bean flour and Bisquick's new gluten free biscuit mix could make for the dry ingredient base for these Blondies ???? I know I am just as pleasantly surprised as I could possibly be! What on Earth made me think to alter Debbie Fields' Blondie recipe this way ? Well, that's easy. I needed to make a sweet dessert for a dinner party group who have gluten issues (like yours truly) and I have been sick to death of the grittiness of conventional rice flour mixes. So, I started branching out by buying and experimenting with GF oat flour, corn flour that has a super fine grind, and garbanzo bean flour.