Bake brownies according to package instructions. Allow to cool completely
In a large bowl. beat filling ingredients together until smooth.
Spread filling over cooled brownies and refrigerate until set - about 2 hours.
In a medium saucepan, heat topping ingredients over low-medium heat until melted - stirring constantly. Cool for about 10 minutes.
Pour topping over filling and spread to cover.
Refrigerate for about 2 hours, or until completely set
Allow brownies to sit out for about 10 minutes before cutting
Enjoy!