This recipe was given to me by my mother. It was her mother's recipe. I converted it to be gluten free. I get rave reviews on these, and people say it's the best date squares they've ever had. If you don't need them to be gluten free, the original recipe calls for 1 1/2 cups of all-purpose (regular) flour. Just omit the rice flour, starch and xanthan gum. Also, you can use regular (not gluten free) oats if you don't need them to be gluten free. If you have a favourite gluten free flour mix, you can use 1 1/2 cups of that instead of the rice flour and starch (omit the xanthan gum if your mix already has it).