Whisk the egg, butter, and sugar subtitute really well
Add the almond flour and coconut flour after sifting it, then mix
Add the baking powder, ginger powder, cinnamon powder, salt, and nutmeg powder to the mixed ingredients and mix again until all incorporated
Take the dough and cover tightly then let chill in the fridge or a cooler for 30 minutes
Take out the dough then roll out between two parchment sheets
After getting the perfect thickness, begin using the cookie cutters to cut out the cookies
Transfer the cookies to a parchment-sheet-lined tray
Insert the tray into a 350 F preheated oven on top of the bottom rack for 6-7 minutes then transfer the tray to the top rack for around 1 minute
Take out the oven and let cool down aside then sprinkle some powdered sugar substitute and decorate with icing as you desire