Notes
Gluten-Free:  Use a high-quality gluten-free measure-for-measure flour that contains xanthan gum as a binder.  
 
Jam/Preserves: Use any kind of jam or preserves you like, or even lemon curd or chocolate ganache, if you prefer! 
 
To Make-Ahead: The dough can be made 1-2 days in advance. Wrap the dough tightly in plastic wrap and refrigerate. When ready to bake, add jam, freeze, and bake according to recipe. Or you can freeze the dough for up to 2 months.
 
To Store: Store leftovers in an airtight container at room temperature for up to 3 days or in the refrigerator for up to 1 week.
 
 
To Freeze (baked): Cool cookies completely, then freeze on a baking sheet until solid. Transfer to an airtight container or freezer bag and freeze for up to 2 months. Thaw at room temperature.