Preheat your oven to 350°. Line cookie sheets with silicone liners or parchment paper.
Combine coconut, flour, salt, sweetened condensed milk, and vanilla in a large bowl. Stir till well blended.
Use a 1 1/2 tablespoon cookie scoop to drop the coconut mixture onto prepared baking sheets.
Bake at 350° for 12-15 minutes, or until golden brown on the bottom and edges. After 2-3 minutes, transfer them to a wire rack to cool completely.
Combine chocolate and oil in a small microwave-safe bowl. Set the microwave to half power. Cook for 30 seconds, then stir for 30 seconds until the chocolate is completely melted and smooth.
Dip the bottom of each macaroon into the melted chocolate and place on silicone baking sheets. Let sit at room temperature for 30 minutes, or until set.
Notes
You can melt the chocolate and coconut oil in a double boiler if you prefer.
If your kitchen is warm, it can take more than an hour for the chocolate to set completely, so plan accordingly. Or to speed things up, you can place them in the refrigerator for about 10 minues.
Leftover cookies can be stored at room temperature in an airtight container for at least a week.