Preheat your oven to 325°F (160°C).
In a mixing bowl, combine the egg whites and a pinch of salt. Beat until soft peaks form.
In a separate bowl, mix ½ cup of sugar with the vanilla extract and shredded coconut. Gently fold in the whipped egg whites.
Using a cookie scoop or spoon, portion the mixture onto the prepared baking sheet.
Bake for about 20-25 minutes, until golden brown on the edges.
Cool the macaroons on the baking sheet for a few minutes before transferring to a wire rack.
Melt the chocolate and vegetable oil in a double boiler or microwave until smooth.
Dip the bottom half of each macaroon into the melted chocolate and place back on the wire rack.
Sprinkle the reserved shredded coconut on top of the dipped macaroons.
Allow the chocolate to set completely at room temperature or in the refrigerator.