Mix all ingredients, knead well, adding enough water so that the dough no longer crumbles. Store the dough in a cool place for at least 30 minutes.
Knead again on a floured surface. Roll out approx. 0.5 cm thick with a rolling pin and cut out the desired shapes. Place on a prepared baking sheet and bake in a hot oven at 180 ° C top / bottom heat until golden brown.
For decorating e.g., Frosting can be used. To do this, mix powdered sugar and water with some food coloring of your choice to form a viscous mixture.
Spread on the freshly baked and warm cookies and sprinkle with brittle or similar if necessary.