Learn how to make a homemade whipped vanilla buttercream frosting that’s great for cupcakes or spatula-frosted birthday cakes. Meringue powder helps keep it stable, and its super light and fluffy texture make it easily spreadable.
In a medium bowl, use an electric mixer with a whisk attachment to whip butter at medium speed for 5 minutes or until soft and light in color.
Add the sugar, beating after each cup, and whip on low speed until fully combined. Frosting will appear dry. Add meringue powder and whip until combined.
Add vanilla, salt, and milk. Whip on medium speed for 10 minutes until frosting is very fluffy.