Cut the marzipan into cubes. Soften in the microwave for 15 to 30 seconds, then cool to room temperature.
Beat the egg whites to stiff peaks. Mix in the desiccated coconut, cocoa powder, and lemon juice until well combined.
Moisten your hands with water. Shape the mixture into small balls and place them on a prepared baking sheet. Bake in a preheated oven at 150°C (302°F) for 10 to 12 minutes until lightly golden.
Once cooled to room temperature, sprinkle or frost with the lemon icing.