Strawberry Bagatelle

Bagatelle aux fraises is a classic French cake that is always made in a square shape. It is composed of two sponge cake layers filled with a thick layer of Diplomat cream (or Bavarian cream) and strawberries cut in half lengthwise and arranged so that their cut sides are visible at the circumference of the finished cake. The sides of the cake are left unadorned to expose the strawberry layer. The bagatelle is topped with pale green marzipan and traditionally decorated with a twisted