Make Orange Sugar: In a food processor, combine granulated sugar and freshly grated orange zest. Pulse until fine and moist.

Prepare Dough: Add all-purpose flour, unsalted butter, salt, and optional orange extract to the orange sugar mixture. Pulse until a ragged dough forms.

Form Logs: Divide the dough into two portions, shape into logs about 12 inches long, wrap in plastic, and refrigerate for 2 hours.

Preheat Oven: Preheat your oven to 350°F (175°C) and line baking sheets with parchment paper.

Slice & Bake Cookies: Slice logs into ½-inch rounds, place on sheets, and bake for 10-12 minutes until edges are golden.

Cool and Dip: Cool cookies on a baking sheet, then dip in melted chocolate and let them harden on parchment paper.