Bake brownies according to package directions in 9x9 pan.
Topping:
Stir together the ingredients and spread on top of cooled brownies.
For the topping, heat cream and butter in microwave just to a boil.
Pour over the chocolate chips in a heat safe bowl and let sit 2 mins.
Pour over coconut layer.
Let cool 30 minutes then chill.
Pop in freezer for neater cutting!