Here are some oreos that would be fit for any st. patrick's day celebration! (or any other celebration???) the chocolate shortbread cookies are dainty and crispy and sandwiched with sweet buttercream that has just a hint of matcha. they are perfect with your afternoon coffee or anytime coffee, and they keep well in the fridge, so go ahead and make a double batch.
make the cookies:
preheat oven to 325. line two baking sheets with parchment and set them aside.
in a small bowl, whisk together the flour, cocoa powder, and salt.
in the bowl of a stand mixer, cream together the butter and brown sugar until light and fluffy. mix in the extracts. slowly add the dry ingredient mixture and beat until just combined. it will still be a bit crumbly.
pour the mixture out onto your work surface and give it a few kneads to bring it all together. if needed, dust your surface with cocoa powder and/or powdered sugar, and working swiftly and carefully, roll out your dough and cut out 2-inch circles. transfer them to your baking sheet, about an inch apart (using a small offset spatula really helps with this step). re-roll scraps and cut out remaining circles.
this is a super delicate dough, so try not to handle it more than you need to, and if it gets too soft, stick it in the fridge or freezer for a few minutes to firm up.
bake the cookies for about 20 minutes, or until the tops are no longer shiny. let them cool.
make the filling:
beat together all ingredients. taste and add a bit more matcha, if you'd like.
fill a piping bag with the filling and pipe a blob onto the center of half the cookies. top them with the rest of the cookies to make little sandwiches. place them in the fridge for a few minutes to allow the filling to firm up before serving. store in the fridge.