Prep Time 15 minutes mins
Cook Time 18 minutes mins
Resting Time 30 minutes mins
Total Time 1 hour hr 3 minutes mins
For the most tender crumb, avoid overmixing after adding the flour and keep the dough cool so the butter stays solid until baking. If dough seems crumbly, knead it gently with your hands a few times to bring it together. For cleaner edges, re-chill cut cookies for 10 minutes before baking. You can substitute 1 to 2 tablespoons of cornstarch for part of the flour for an extra delicate texture, or add a pinch of lemon zest for brightness. Bake one sheet at a time in the center of the oven for even coloring, and remove cookies before they brown deeply to preserve the classic pale shortbread look.