Wedding Cupcake Buttercream: a buttercream frosting recipe that is perfect for cupcakes and cakes. It pipes beautifully! || Instead of 2 tbsp milk in a regular buttercream, switch out for 2 tbsp heavy whipping cream. May be more sensitive to heat (anything with butter will be). Not better than a meringue buttercream, which is a fluffy and nice wedding cake icing.