01 -
Whip the butter and sugar together until it's fluffy and smooth.
02 -
Add the whole egg first, then follow with the extra yolk. Blend everything nicely.
03 -
Stir in the vanilla and ensure it's evenly combined.
04 -
Alternately mix in the dry ingredients (flour, baking powder, salt) and Baileys until it forms a smooth dough.
05 -
Wrap the dough in plastic wrap and let it sit in the fridge for a few hours or overnight.
06 -
Roll out the chilled dough and use cutters to make your shapes. Chill the cut-out pieces for about 30 minutes before baking.
07 -
Bake at 350°F (175°C) for 12-13 minutes. Flip them halfway, and look for lightly golden edges.
08 -
Heat the heavy cream until it’s just simmering. Pour it over the chopped chocolate, then stir until it’s smooth.
09 -
Mix in the peppermint extract and let the ganache sit until it thickens.
10 -
With a piping bag or spatula, spread the ganache on cookies and sandwich them together.