Beat 2 egg whites until stiff. Add sugar and continue beating for 6-8 minutes. Mix lemon zest, cinnamon and almonds, fold in and work into a smooth dough. Pour the dough onto a piece of baking paper sprinkled with flour. Place a piece of cling film on top and roll out the dough to a thickness of approx. 0.5 cm. Cut out stars (approx. 5 cm Ø) and shooting stars (approx. 8 cm long) from the dough and place them on three baking trays lined with baking paper.
Beat the remaining egg white until stiff for the icing. Add icing sugar and stir in. Brush stars and shooting stars with it. Bake in the preheated oven (electric: 150 °C/ gas: level 1) for about 15 minutes on the lowest rack. After 5 minutes, cover if necessary and continue baking. Leave to cool down