INGREDIENTS
1/2 cup
unsalted butter, softened
3/4 cup
sugar
1
egg
1/4 tsp
natural peppermint extract
1 1/4 cups
unbleached all-purpose flour (or whole-wheat pastry)
1/3 cup
cocoa powder
1/4 tsp
salt
1/2 tsp
baking soda
1/4 tsp
baking powder
1
candy cane, finely crushed
1/3 cup
dark, bittersweet or semisweet chocolate chips