This chocolate raspberry truffle cake with mascarpone frosting is perfect for those who love the creamy and tangy flavor of mascarpone cheese. The cake is made with a chocolate cake mix, raspberry jam, and a mascarpone frosting. To make the cake, simply follow the instructions on the cake mix box and bake the cake in two 9-inch round pans. Once the cake has cooled, spread raspberry jam between the layers and cover the cake with a mascarpone frosting made with mascarpone cheese, heavy cream, powdered sugar, and vanilla extract. Garnish with fresh raspberries and enjoy!