This classic American buttercream recipe is a rich, creamy frosting that’s perfectly sweet and incredibly easy to make. Made with simple pantry staples like butter, powdered sugar, vanilla extract, and a splash of milk or cream, it whips up light, fluffy, and smooth in minutes. Its sturdy texture makes it ideal for frosting cakes, piping decorations, and topping cupcakes, while still delivering that nostalgic homemade bakery flavor. Whether you’re decorating a birthday cake or layering a celebration dessert, this timeless buttercream is reliable, customizable, and always delicious.