Directions

1. In a mixing bowl, combine the flour, cocoa powder, baking soda, baking powder and salt.
2. In a separate bowl, combine the butter, sugar, vanilla, and egg. Add the wet ingredients to the dry ingredients and combine well. Add the chocolate chips and walnuts, mix well.
3. In another bowl, combine the pumpkin puree, the cinnamon, and the nutmeg. Transfer half of the pumpkin puree to the chocolate batter and mix well.
4. Place 3/4 of the chocolate/pumpkin mixture in a greased 9 x 13 baking dish. Spoon the remaining pumpkin puree over the mixture in the pan, followed by the remaining chocolate batter on top of that. Use a spoon to swirl the pumpkin and the chocolate together.
5. Bake in a 350-degree oven for approximately 45 minutes or until a toothpick inserted in the center comes out clean.