Make the filling: In a medium size bowl, stir together the egg, sugar, salt, butter, and vanilla until well combined. Stir in the almonds and coconut. Spoon 1 heaping teaspoon of the filling into each dough cup. Bake for 25 mins or until the crust is set and the filling has puffed up. Cool the tassies in the pan for 5 minutes before transferring to a wire rack to cool completely.