"From 125 Best Cupcakes Recipes book. Delish and easy to make!"
unsalted butter, at room temperature
In a small bowl, using an electric mixer on low speed, beat together sugar, butter and salt until creamy. Increase speed to high and beat until light and fully. Add vanilla, beating until frosting is smooth.
Spread icing on cooled cupcakes or cake with a knife or transfer to a pastry bag and pipe decoratively over cake or cupcakes.