Directions

• In a stand mixer, beat softened butter and granulated sugar on medium speed until creamy and fluffy, about 3-4 minutes. Then, add the egg and vanilla, mixing until fully incorporated.
• In a separate bowl, whisk together the all-purpose flour, kosher salt, and baking soda. Gradually add this mixture to the butter blend on low speed until just combined; the dough should be soft.
• Divide the dough into thirds, coloring one part with red gel food coloring and another with green. Leave the last portion uncolored. Wrap each in plastic wrap and refrigerate for 1 hour to firm up.
• On a lightly floured surface or parchment paper, roll each colored dough into a 7-inch square. Stack them in the order of red, green, and uncolored, then roll tightly into a log. Chill again for 15 minutes.
• Preheat the oven to 350°F (175°C). Carefully slice the log into ⅓-inch thick rounds. Roll the edges of each slice in red sanding sugar for a festive touch, then place them on lined baking sheets.
• Bake for 8-10 minutes until the cookies are set but not browned. Allow to cool on the baking sheet for 1 minute before transferring them to wire racks to cool completely.
• Optional: Add extra holiday sparkle by drizzling melted chocolate over the cooled cookies.