Preheat the oven to 350° and line a sheet tray with parchment paper.
In a large bowl, add the room temperature butter. Add in the powdered sugar, maple syrup, salt, lemon zest and juice and stir well until combined. Add in the gluten free flour and mix until dough forms.
Scoop into 1 tablespoon balls and roll between hands. Place on the prepared pan and slightly press down to flatten them. Put 12 on a tray at a time, making two batches. They should make about 20 cookies. Bake 12-14 minutes, until the bottoms are golden brown. Let cool fully.
Make glaze- in a small bowl combine the powdered sugar and lemon juice until smooth. Spoon over each cookie. It will harden as it cools.
Store covered at room temperature for up to 10 days.
Notes
*Ghee works as well if not needing vegan or butter if not needing dairy free