In a heavy bottomed saucepan, add the melted coconut oil, sugar, milk, and cocoa. Bring the mixture to a boil, and let boil 2 minutes. Remove from heat. Add oatmeal, shredded coconut, and vanilla. Stir to combine. Drop by large spoonfuls onto aluminum foil or use a cookie dough scoop to form mounds. Sprinkle with additional shredded coconut as garnish, if desired. Allow candy cookies to cool.