This is a recipe for a cute Christmas tree-shaped tart cake that can be easily made without an oven. A crispy tart crust is made by mixing finely crushed Marie biscuits in a food processor with melted butter, and then filled with a rich ganache made with chocolate and fresh cream. Finally, matcha cream made by whipping matcha powder, granulated sugar, and fresh cream is piped on to decorate it to resemble a Christmas tree. You can easily make a gorgeous dessert perfect for Christmas parties or home cafes using tools from a 100-yen store and ingredients that can be found at a supermarket.