Preheat the oven to 350℉. Grease and line a 9x9 inch square baking pan and set aside.
In a large bowl, add in cocoa powder, flour, baking soda, baking powder, cinnamon, allspice, nutmeg, ginger, and salt. Set aside.
1 1/2 cups all-purpose flour, 1/3 cup unsweetened cocoa powder, 1 tsp baking powder, 3/4 tsps baking soda, 1 tsp cinnamon, 1/2 tsp allspice, 1/4 tsp ginger, 1/4 tsp nutmeg, 1/2 tsp salt
In a large bowl, add in pumpkin, brown sugar, white sugar, eggs, oil, vanilla, and sour cream. Whisk together.
1/2 cup dark brown sugar, 1/2 cup white sugar, 3/4 cups pumpkin puree, 2 eggs, 1/2 cup oil, 1/2 cup sour cream, 1 tbsp vanilla
Add the dry into wet and using a spatula, gently mix until just combined.
Mix in the semi-sweet chocolate chips. Do not overmix!
1/2 cup semi-sweet chocolate chips
Add the batter into the prepared pan and spread evenly.
Bake the cake for 45-60 minutes minutes, or until a toothpick inserted comes out dry. Mine took 55 minutes. If it is wet, then the cake hasn’t fully baked yet so continue to bake at 5 minute intervals. Allow it to cool completely.
As the cake cools, melt the butter. Then add in the milk and dark chocolate bars and on low, continue mixing until smooth and completely melted.
100 g butter, 100 g dark chocolate, 100 g milk chocolate
Once the cake is completely cooled, drizzle the chocolate ganache on top and spread evenly. Allow to set, slice, and enjoy!