Ensure flour is measured accurately—preferably with a kitchen scale—to avoid dryness. If using volume, fluff the flour, spoon it into the cup, and level it off with a knife.
Sanding sugar adds a delightful crunch but may be substituted with regular sugar or omitted altogether.
To achieve an extra crisp finish, leave the cookies on the baking sheet in the turned-off oven with the door ajar after baking.
For cut-out variations, form the dough into a flat disk, wrap and chill, then roll to 1/4 inch thickness, cut shapes, and bake.
Opt for high-quality vanilla extract to enhance the cookie’s signature flavor—avoid artificial alternatives.