Put the flour mixed with baking powder with butter, icing sugar, egg and lemon zest in a large bowl and knead well, chill the dough for 20 minutes (no longer).
Then roll out about 3mm thick on a well-floured board and rub out or cut squares of about 10 cm, put 1 heaped teaspoon of jam (do not use liquid) in the middle, then fold into a triangle, the edges well with a fork or finger Press down - place on a prepared tray and bake in a preheated oven at 160 ° for about 15 minutes.
When cold, coat 2 edges with glaze and top with chocolate sprinkles
Glaze:
Mix some icing sugar with enough amaretto or rum to make a spreadable glaze