Preheat oven to 400°F and line baking sheets with parchment paper. In a bowl, whisk together flour, baking powder, and salt.
In the bowl of a stand mixer fitted with a paddle attachment, cream together softened butter and confectioners’ sugar.
Add the egg and vanilla and beat until mixed.
With the mixer on low, slowly add the flour into the creamed butter.
The dough is ready when most of it sticks to the paddle. When touched it, it has a little give, but does not stick to fingers.
Flour the work surface and roll dough to about 1/4 inch thick, using flour for dusting as necessary. Use a shamrock cookie cutter to cut out cookies.
Place cookies on prepared baking sheet and bake for 7 to 8 minutes, or until the edges start to turn golden. Allow the cookies to cool on a wire rack.
In a double boiler, make liquid chocolate by melting chocolate chips with shortening. Dip half of the cookie into the chocolate and place on wire rack.
Sprinkle the chocolate with green sprinkles for a fun St. Patrick's day vibe.
Enjoy! This shamrock cookies recipe is so easy and delicious! These spring cookies are the best!