Lemon cake filled with sweet-tart lemon curd and rich, luscious lemon buttercream frosting is like sunshine in cake form. It’s sweet, it’s tart, and it’s a beautiful pale yellow color. What better way to celebrate a birthday or other occasion, or simply to bring some cheer to an otherwise dull day?
Note that the filling for this cake must chill in the refrigerator overnight, so start at least a day ahead of when you plan to serve the cake. The filling can be kept, covered, in the refrigerator for up to three days. If you don’t have the time or inclination to make the filling, you can use a jar of store-bought lemon curd instead. Or, you can just make extra lemon buttercream frosting and skip the lemon curd altogether.