Tip: The cookie dough can be refrigerated up to three days and frozen for up to two months. Let it thaw in the refrigerator overnight before rolling it out. The royal icing can be made up to three ...

Remove from the oven and cool for at least 30 minutes before icing. Transfer a few tablespoons of the royal icing to a small ... the edges of the heart shaped cookies. Set them aside to dry.

To make, ice any cut-out cookies (sugar cookies, gingerbread) with a batch of stiff royal icing (icing sugar + egg whites).