Prep Time 15 minutes mins
Cook Time 18 minutes mins
Resting Time 45 minutes mins
Total Time 1 hour hr 18 minutes mins
Chilling the cut dough prevents spreading and preserves sharp edges, especially with intricate shapes. Measure flour by spooning and leveling to avoid a dry, crumbly dough; if dough seems too dry, work it gently with clean hands to warm the butter slightly. Cornstarch keeps the crumb tender, but you can replace it with equal flour if needed. For ultra-crisp cookies, bake until edges are lightly golden and allow a full cool; for softer, pull a minute earlier. Temper chocolate for a perfect snap and sheen, or add a teaspoon of neutral oil for easy dipping; avoid water contact to prevent seizing. Store cookies in an airtight container at cool room temperature for up to 1 week or freeze undecorated cookies for 2 months and dip in chocolate the day of serving.