In a large mixing bowl, mix the butter, brown sugar, molasses, salt, ground cinnamon, ground ginger, ground all-spice, egg, baking powder, baking soda, and flour mix well.
Place the dough in the refrigerator for about an hour until it's cold.
Then on a large counter or cutting board, add some flour, roll out the dough until it's about 1/4 inch thick. Use flour on the rolling rin as well, since it will stick if you don't.
Then use your gingerbread cookie cutters to cut out the shapes.
As you make them place them into a greased air fryer basket or use parchment paper. (Or if you have an oven, place them on a greased air fryer tray) Set the temperature to 320 degrees F, air fryer setting, for 5 to 7 minutes.
Let cool before decorating.
Plate, serve, and enjoy!