Which of these is a small round cake, consisting of two halves sandwiching a creamy filling?

A macaron or French macaroon is a sweet meringue-based confection made with egg white, icing sugar, granulated sugar, almond meal, and food coloring. There is some variation in whether the term macaron or macaroon is used, and the related coconut macaroon is often confused with the macaron.

The macaron is traditionally held to have been introduced in France by the Italian chef of queen Catherine De Medici during the Renaissance. Since the 19th century, a typical Parisian-style macaron is presented with a ganache, buttercream or jam filling sandwiched between two such cookies, akin to a sandwich cookie. The confection is characterized by a smooth squared top, a ruffled circumference—referred to as the "crown" or "foot" (or "pied")—and a flat base. It is mildly moist and easily melts in the mouth. Macarons can be found in a wide variety of flavors that range from traditional (raspberry, chocolate) to unusual (foie gras, matcha).