A Charlotte Royale cake is a variation of the Charlotte cake that replaces the ladyfingers with slices of Swiss roll). The cake is made by lining a mold with the Swiss roll slices and filling it with Bavarian cream or other types of filling). The filling may also include fruits like raspberries, strawberries, or cherries. The cake is then covered with cookies or pieces of cake. The dessert has a reputation for being difficult to make, but it is achievable with a little practice. Mary Berrys Charlotte Royale recipe involves swiss rolls filled with homemade jam. The cake is often served cold and can be a beautiful and delicious dessert.