Mix the butter and sugar with the spices until frothy. Stir in the eggs one by one, then add the lukewarm coffee and stir well.
Mix the flour with baking powder, sieve over the mixture and stir in. Spread on a well-greased tray and bake at 170 ° for approx. 25-30 minutes (depending on the oven).
Let the spice slices cool down and cover with couverture, sprinkle with colorful sprinkles if necessary.