4
Meanwhile, in 2-quart bowl, microwave vanilla baking chips uncovered on High 30 seconds or until melted. Stir; if chips are not completely melted, microwave 15 seconds longer, then stir until all chips are melted. Stir in icing sugar, butter, reserved 1/3 cup coconut milk and the vanilla. Cover; refrigerate 30 to 60 minutes. (If frosting becomes too firm to spread, microwave uncovered on High 10 to 15 seconds to soften; stir until smooth.)