¾ cup all purpose flour
½ teaspoon baking powder
½ teaspoon salt
¾ cup butter (melted)
1 ½ cups white sugar
2 teaspoons vanilla extract
¼ cup cocoa powder
½ cup semi-sweet chocolate chips
½ cup pumpkin puree
½ cup walnuts (chopped)
¾ teaspoon cinnamon
½ teaspoon ground cloves
½ teaspoon nutmeg
Step 1: Pre-heat the oven to 350 degrees and line an 8×8 inch baking dish with aluminum foil. Lightly grease the foil. In a bowl combine flour, baking powder and salt.
Step 2: In a separate bowl mix together melted butter, sugar, and vanilla. Beat in the eggs (one at a time). Add in the flour mixture, a little at a time and stir until the batter is evenly moistened. Divide the batter in half evenly into 2 separate bowls.
Step 3: In one of the bowls blend in the cocoa powder and chocolate chips. In the second bowl of batter stir in pumpkin puree, walnuts, cinnamon, cloves and nutmeg.
Step 4: Spread ½ of the chocolate batter mixture into the bottom of the baking dish. Pour ½ of the pumpkin batter mixture over that. Repeat the layers, ending with a pumpkin layer. Drag a kitchen knife or spatula through the layers in a swirling motion creating a marble appearance.
Step 5: Bake in the oven at 350 degrees for 40-45 minutes or until a toothpick inserted into the center comes out clean. Cool and cut into squares.