Butter Swirl Shortbread Cookies are a great Christmas Cookie for Holiday Baking! The dough is so easy to make and uses simple ingredients. These are a classic, crisp cookie.
*If using unsalted butter, add 1/4 tsp of salt with the flour.
**Shortbreads are naturally thick and a more dry dough. If the dough doesn't come together, add another tablespoon or two of milk. Make sure to use a VERY large open tip for piping the dough, otherwise it will be too difficult to pipe it out. You can also use a cookie press instead, or even slice and bake.
***The cookies crisp more as they cool, so it's important to let them cool down for at least an hour.