Reduce oven temperature to 350℉/177℃.
Spread coconut evenly on sheet pan.
Bake, stirring occasionally, until coconut is golden brown, about 5 minutes.
Set aside to cool.
In a medium, heavy saucepan, combine sugar, corn syrup, 1¼ cups cream, and butter.
Cook and stir over medium low heat until sugar melts.
Stop stirring and brush down sides with a silicone brush dipped in warm water.
Continue cooking to 245℉/118℃.
Remove caramel from heat.
Stir in vanilla and toasted coconut.
Immediately transfer to heatproof glass bowl.
Add ¼ cup cream.
Place over a pot of simmering water.
Heat and stir until melted and smooth.
Carefully place 1½ teaspoons, or desired amount, on top of each cookie.
Set aside to cool.