Pies typically consist of a pastry crust with a filling that is either savoury or sweet. An example of a pie where an alternative type of crust is used is a shepherd's pie, which is made using mashed potato.
Sweet treats seem to be the first foods to get thrown overboard when a gluten intolerance is diagnosed. However, it needn't be the case: gluten is actually the foe of baking! Reinstate pastry in your home and have some pie! This dough can also be baked into shortbread biscuits.