How to Make Fluffy Vanilla Buttercream Frosting

The key to fluffy vanilla buttercream frosting is a lengthy whip at the end - a full 5 minutes. This simple trick makes a light and airy frosting that spreads and pipes beautifully! This buttercream frosting comes together quickly, isn't overly sweet and packs a vanilla punch! It's perfect for frosting cakes and cupcakes and for filling sandwich cookies.