When ready to bake, preheat the oven to 325°F.
Line baking sheets with parchment and set aside.
Cut the chilled dough into 2½-inch lengths.
Place on the parchment-lined baking sheet about 1 ½ inches apart.
Press a sliced almond into the top of each cookie, with the pointed side up to mimic a fingernail. The pointy end should be slightly over the end of the cookie and you can mold the dough around and underneath the almond to make the fingertip look more realistic.
Make sure that the almonds are firmly pressed into the cookie, as they can fall off if not. If the dough is too hard, let the cookies sit for a bit to warm up.
If any almonds do fall off they can easily be reattached after baking. See instructions below.
Bake for about 13-15 minutes, until very lightly golden on the bottom and just firmly set (they should stay pale, not deeply browned).
Transfer to a wire rack and cool until they are easy enough to handle, about 5-10 minutes.