Buttercream has long been a staple in the world of cakes and cupcakes. Among the many types of buttercream, Classic American Buttercream stands out as the most widely used and beloved variety. Its simplicity, versatility, and rich, sweet flavor make it a go-to for home bakers and professionals alike. Whether you're frosting a cake for a birthday, decorating cupcakes, or filling a batch of macarons, American Buttercream delivers the perfect balance of sweetness and texture that everyone loves. 

Classic American Buttercream is a simple, sweet frosting made primarily from butter, powdered sugar (also known as confectioners’ sugar), and a small amount of liquid, such as milk or cream. It is the most common buttercream used in the United States, especially for cake decoration and cupcakes. The frosting is light, fluffy, and easy to pipe, with a smooth texture that pairs beautifully with many types of cakes, from vanilla to chocolate.

When it comes to baking, few treats are as universally loved as sugar cookies. Their delicate sweetness and soft texture make them a go-to choice for holidays, parties, or even a simple afternoon snack. However, if you or someone you love follows a gluten-free diet, you may have struggled to find a sugar cookie recipe that delivers on both flavor and texture. That's where these Gluten-Free Sugar Cookie Bars Topped with Smooth Vanilla Buttercream come in! This recipe is a game-changer for anyone who loves sugar cookies but needs to avoid gluten. The best part? They’re easy to make, taste absolutely delicious, and are topped with a velvety, melt-in-your-mouth vanilla buttercream that takes them to the next level.

Imagine sinking your teeth into a thick, soft sugar cookie that practically melts in your mouth—now add a dreamy, smooth vanilla buttercream on top that’s both creamy and light. These gluten-free sugar cookie bars are the epitome of dessert perfection. The flavor is sweet, but not overwhelming, and the texture is exactly what you’d hope for in a sugar cookie: soft, chewy, and just the right amount of crumbly. Thanks to the combination of gluten-free flour, butter, and a touch of cream cheese the bars have a richness that’s balanced by the slight tanginess of the sour cream and the sweetness of the buttercream.