Blackberry Chocolate Cake with Blackberry Mascarpone

"This eight-inch Blackberry Chocolate Cake starts off with three layers of moist, rich dark chocolate cake. Between each layer, there is a swirled blackberry and mascarpone cream filling, made with a homemade blackberry compote. The cake is then frosted with a fudgy, blackberry chocolate buttercream. To top it all off, a mountain of fresh blackberries on top. This decadent dessert would make a stunning centerpiece for any event and is sure to please any chocolate lover."