In a medium-sized bowl, mix together the flour, baking powder, and salt and set aside. Allow the butter to sit out for a few minutes (it should still be cool to the touch).

In a mixer with the paddle attachment, add the butter and sugar. Mix on low until combined. Add the egg and vanilla and mix until combined. Slowly add the flour mixture until combined.

Separate 1/3 of the dough out and color it green by adding a couple of drops of food coloring (I used gloves and mixed it around in my hands).

Roll out the green dough to about 1/2" thickness and use a cookie cutter (I used a small clover) to cut out shapes.

Stack the shapes horizontally together, being careful to keep their shape, until you have a long log of your shape. You can gently press them together as you go. If it starts to get difficult to work with, you can chill in the fridge for a few minutes.

With the plain-colored dough, start to make long snake-like pieces. On a clean surface, roll the dough with the palm of your hand and lay your pieces to the side. You'll add these pieces all around your colored shapes to create your cookie dough log.

Add a "snake" piece of dough to the outside of the shape log and gently press. Keep adding "snakes" all around until it resembles a circle and is about 2-3" across.

Gently roll the whole log to smooth out the sides. Try not to stretch it, but just keep carefully rolling until smooth.

Refrigerate for an hour or until chilled.

Preheat the oven to 350 degrees. Slice the dough log into 1/2" pieces and add to a cookie sheet with parchment or a baking mat, leaving about 1" of space around each cookie.

Bake at 8-10 minutes or until the bottom is only slightly browned and the top no longer looks wet.