Place the butter and sugar in the mixing bowl and mix them together until they are fluffy. About 3 minutes.
Add the egg, vanilla extract and 4-5 drops of green food gel color. Mix until everything is combined. Add the Irish Cream and mix about 1 minute to combine.
Add the the flour and salt to the bowl. Mix everything together until it forms a soft, smooth dough.
Cut a medium size hole in the pointed side of the piping bag and slide the piping tip half way through it.
Fill the piping bag with the cookie dough and twist the end of the bag.
Next, line the baking sheet with a parchment paper.
Pipe the cookie dough into a 2-inch wiggle shape, like a backward S. Then pipe a straight line across the bottom of the shape. Pipe more hats on the baking sheet about 1-2 inches apart. Follow the same steps until you use all of the cookie dough. Be aware, these cookies do spread so spacing is important.
Place the baking sheet with the cookie hats in the refrigerator for 30 minutes.
Preheat the oven to 350 degrees.
Bake the cookies for 12-15 minutes.
Set the cookies aside to cool.
Once the cookies are cool, match 2 cookies together by size to make the cookie sandwiches later.
Making The Filling
Put the chocolate in a medium size bowl.
Pour the heavy cream in a microwave safe cup and heat up the cream for about 30 seconds-1 minute. Do not let it boil.
Pour the hot heavy cream over the chocolate chips and let it sit for 5 minutes.
Use a spatula or whisk to stir the chips and warm cream together. As you are mixing, pour in the Irish cream and continue to mix until the chocolate is a smooth ganache.
Place the ganache in a new piping bag and secure the end. Cut a small hole in the tip.
Flip one hat cookie over and pipe ganache on the smooth side of the cookie. Lightly press the second hat cookie on top of the ganache.
Pipe a line across the hat that’s right above the brim. Then put 1 or 2 gold sprinkles in the middle to represent the gold buckle.
Notes
These Irish Cream cookies are best eaten the day they are made, but they can be stored in an airtight container in a cool dry place for 3 days or in the fridge for 5 days
These cookies spread while baking, so leave space between each piped hat.
If you want to make this recipe fun for the whole family, you can use Irish Cream Coffee Creamer instead of the alcoholic Irish Cream.