To make this recipe gluten free, replace the sugar cookie dough with a certified gluten-free sugar cookie dough or a homemade gluten-free cookie crust. Also confirm that the vanilla extract, sour cream, cream cheese, and cherry pie filling are labeled gluten free or free from cross-contact concerns, as some brands may contain additives or be processed in shared facilities. Because gluten-free cookie crusts can be a little more delicate, press the crust firmly into the pan and allow the cheesecake to chill fully before slicing to help it hold together better.