5 oz/150 g
bittersweet/plain chocolate, coarsely chopped
6 tbsp butter
Method:
Sift the flour, cocoa, and salt into a medium
bowl. Beat the butter and sugar in a large bowl
with an electric mixer at high speed until
creamy.
Add the mint extract and egg, beating until just
blended. Mix in the dry ingredients. Press the
dough into a disk, wrap in plastic wrap, and
refrigerate for 30 minutes.
Preheat the oven to 350°F/180°C/gas 4. Butter
two cookie sheets. Roll out the dough on a
lightly floured surface to a thickness of 1/8
inch (3 mm).
Use a 2inch (5-cm) cookie cutter to cut out the
cookies. Gather the dough scraps, re-roll, and
continue cutting out cookies until all the dough
is used.
Use a spatula to transfer the cookies to the
prepared cookie sheets, placing them 1 inch (2.5
cm) apart.
Bake for 6-8 minutes, or until just golden at
the edges. Transfer to racks and let cool
completely.
Filling: Bring the cream to a boil in a small
saucepan over low heat. Remove from the heat and
stir in the white chocolate.
Add the mint extract and transfer to a medium
bowl. Cool for 30 minutes, or until firm but not
set. Stick the cookies together in pairs with
filling.
Glaze: Melt the chocolate and butter in a double
boiler over barely simmering water. Spread on
top of the cookies and refrigerate for 30
minutes.