Sift the flour, baking powder and spices together in a bowl. Heat the honey and butter gently in a small pan until the butter melts. Cool till only just warm, then beat in the egg. Add the honey mixture to the spiced flour and mix well to form a dough. Chill.
Preheat the oven to 180 C / gas 4 and line a baking sheet with baking parchment.
Shape the dough into balls about 2.5cm in diameter and arrange on the sheet. Bake on a greased tray at 180 C for 15 minutes or until golden brown and well risen. Cool.
Cut the tops off. Put a little jam inside, then replace the tops. Melt the plain chocolate. Dip the jam-filled Pfefferneuse into the chocolate until completely covered. Leave to dry on greaseproof paper.
Mix about the icing sugar with 4 tablespoons water to form a thin glaze. Use this to ice the remaining biscuits, and leave to dry on greaseproof paper.