Lemon-Pepper Shortbread

Old-time shortbread recipes tend to be very similar and very simple—they call for lots of butter, flour, salt, sugar, and—often—caraway seeds. The one from The Cookie Book (1973) is reworked here, not because the recipe differed from the others, but because of its name, Scotch Shortbread. I love that the name reminds us of the cookie’s provenance. Instead of the brown sugar called for in the original, I substituted both confectioners’ sugar (for tende