In a small pot, cook the honey and the sugar over medium-low heat until the sugar has dissolved (do not bring to a boil). Remove from heat and stir occasionally to let the mixture cool down to less than 140°F
Meanwhile, preheat your oven to 350°F and line a baking sheet with parchment paper; set aside.
In a separate medium bowl, whisk together the flour, baking powder, and lemon zest; set aside.
Once the honey-sugar mixture has cooled down enough mix in the egg and all of the spices and stir quickly to combine.
Pour the honey mixture into the flour mixture and mix using a wooden spoon or a rubber spatula until a ball of dough forms.
Use a medium cookie scoop to form small balls of about 1½-inches each and set on the baking sheet.
Bake for 13 to 15 minutes until the cookies lightly brown. Then let them cool completely on the pan.
Make the glaze by combining the powdered sugar and 3 tablespoons of water in a medium bowl, add more water if needed until you have a thick paste.
Then either dip the pfeffernüsse cookies into the sugar glaze or spread the glaze with a brush onto them and let them dry completely on a cooling rack.