bars to cool completely in the pan.
Make the glaze: In a small bowl, whisk together the powdered sugar, lemon juice, and a little water until smooth. If the glaze is too thick, add more water, one drop at a time.
Glaze the bars: Once the bars are completely cool, pour the glaze over the top, smoothing it out with a spatula. Allow the glaze to set for a few minutes.
Let them sit: Cover the bars and let them sit for a week or so to deepen the flavor, just like the traditional recipe from Nuremberg. The bars will become soft and flavorful as they rest.
Enjoy your homemade Nuremberg Christmas Bars!