Preheat the oven to 350 degrees and line 2 cookie sheets with parchment paper or a silicone mat
Using a large bowl, whisk together the flour, baking soda, ground cinnamon, ginger, cardamom, allspice, nutmeg, salt, and black pepper
Using another large bowl and hand mixer, beat together the butter and brown sugar until light and fluffy
Beat in the eggs, one at a time until combined
Beat in the vanilla until combined
Gradually beat in the dry ingredients until combined and a dough has formed
Sprinkle some flour onto a cutting board and roll the dough out into ¼ in thick
Use the cookie cutter and cut out circles
Place 12-14 circles onto a cookie tray and bake in the oven for 8-10 minutes or until the cookies are lightly brown
Remove from oven and allow to cool for 5 minutes before removing and placing onto a wire rack
Once all cookies have baked, allow cooling completely on the wire rack
Using a small bowl, whisk together the chai sugar topping ingredients until combined
Melt the butter in a small bowl
Using the bbq brush, dip it into the melted butter and lightly brush the butter onto the cookies
Sprinkle the chai spiced sugar onto the cookies
Using a large bowl, whisk together the maple icing ingredients
If the icing is lumpy whisk in 1-2 more tsp of milk
Scoop the icing into the piping bag
Cut the tip off the piping bag and drizzle lines over the cookies
Allow the icing to set before enjoying