Preheat oven to 350 degrees
Using a standing mixer, cream together the butter and sugar until light and fluffy.
Using a small bowl, combine the eggs, vanilla, Baileys and coffee grounds. Mix using a whisk until completely combined.
Gradually add in the coffee liquid to the butter and the sugar mixture and mix until fully combined.
In medium mixing bowl, combine the flour, baking powder, cinnamon and salt and mix until combined.
Gradually mix into the wet mixture until fully combined
Dough will still be really wet and soft, mix in another 1/4 C of flour into the dough.
Lightly flour a cutting board and scoop the dough onto the board.
Sprinkle some more flour onto the dough and begin to knead the dough until flour is combined. You want the dough to be like a sugar cookie cut out dough because you will be using a cookie cutter.
Lightly flour the cutting board again and roll your dough out to about 1 inch thickness.
Using your cookie cutter, begin to cut your circles out. You will want to cut out 36 circles to get 18 cookies.
Bake for 8-10 minutes, or until edges are slightly golden
Allow cookies to cool completely