Learn how to make the ultimate Pumpkin Spice Cake, packed with warm autumn flavors! Topped with rich dark chocolate ganache ...

For the dark chocolate buttercream, repeat the method for the white chocolate buttercream. For the ganache, heat the double cream in a saucepan until just boiling, then remove from the heat.

Still, this holiday baking project is worth the time and effort, especially for the whimsical and stunning presentation: nutty dark-chocolate ... which is filled with buttercream or another ...