Spread the coconut out in a single layer on a half sheet pan. Bake for 15 to 20 minutes, stirring every 5 minutes, until the coconut is golden. Set on a cooling rack to cool.
Whip the eggs whites and sugar in a large bowl with a hand mixer on high for 8 to 10 minutes until stiff peaks form. Add the vanilla and salt. The egg whites and sugar can also be whipped in a stand mixer fitted with the whisk attachment.
Using a rubber spatula, fold in the toasted coconut.
Drop by the tablespoon onto a parchment paper-lined half sheet pan, leaving 1 to 2 inches around each cookie. Bake for 15 to 20 minutes or until golden brown.
The outsides should be golden brown but the insides should still be moist.