Begin by beating the unsalted butter and granulated sugar together in a mixing bowl until the mixture is light and fluffy. This process incorporates air, giving your cookies a tender texture.

Next, mix in the orange zest and melted dark chocolate until well combined. The citrus zest will enhance the flavor beautifully, making each bite a burst of freshness.

Gradually add the all-purpose flour to the butter mixture, mixing until just combined. Be careful not to overmix, as this can lead to tough cookies.

Wrap the dough in plastic wrap and refrigerate for at least 30 minutes. Chilling helps the flavors meld and makes the dough easier to handle.

Preheat your oven and roll the chilled dough into logs or cut out shapes with cookie cutters. Place the cookies on a baking sheet and bake until golden. The aroma of baking cookies will fill your home!