Preheat your oven to 350F and line a baking sheet with baking paper.
Mix the butter and sugar in a bowl for at least 5 minutes until creamy and pale.
Add the eggs, one by one, then stir in the lime zest.
Add the flour, salt, baking powder, baking soda and coconut and mix with a spatula to form a dough.
Transfer the dough on your prepared baking sheet and shape it into a log.
Bake the log for 15-20 minutes until golden brown then remove from the oven and allow to cool down for 10 minutes.
Slice the baked log into 1cm thick slices and arrange them back on the baking sheet with the cut facing up.
Bake again in the oven at 330F for another 15 minutes or until golden brown and dry.
Allow to cool and store in an airtight container.
