01 - Set oven temperature to 350°F. Line a baking sheet with parchment paper for easy removal.
02 - In a large bowl, thoroughly mix shredded coconut, sugar, egg whites, vanilla extract, and salt until fully incorporated.
03 - Using a tablespoon or small ice cream scoop, place mound-shaped portions on the baking sheet leaving about 1 inch between each.
04 - Bake in preheated oven for 18 to 20 minutes until edges and tops turn golden brown.
05 - Remove from oven and allow macaroons to cool completely on the baking sheet.
06 - Gently melt dark chocolate and optional coconut oil in a heatproof bowl over simmering water or in microwave bursts of 20 seconds, stirring until smooth.
07 - Dip the base of each macaroon into melted chocolate, then place back on parchment paper. Use a fork or piping bag to drizzle remaining chocolate on top.
08 - Let the chocolate firm up at room temperature or refrigerate for 10 to 15 minutes prior to serving.