1 cup canned pumpkin puree (not pumpkin pie filling)
1/2 cup vegetable oil
2 large eggs
1 1/4 cups granulated sugar
1/4 cup unsweetened cocoa powder
1/2 cup semi-sweet chocolate chips
2 tablespoons milk
Instructions
Preheat your oven to 350°F (175°C). Grease a 9×5 inch loaf pan thoroughly with butter or non-stick cooking spray. You can also line the bottom with parchment paper for even easier removal later.
In a medium-sized mixing bowl, whisk together the flour, baking soda, salt, and pumpkin pie spice. Ensure there are no large clumps so the leavening agent is evenly distributed throughout the bread.
In a separate large bowl, beat the eggs and sugar together until light and fluffy. Stir in the pumpkin puree and vegetable oil until the mixture is smooth and vibrant orange.
Slowly add the dry ingredients into the wet ingredients. Fold them together gently using a spatula just until no streaks of flour remain. Be careful not to overmix, as this can make the bread tough.
Transfer about 1 cup of the pumpkin batter into a separate bowl. To this smaller portion, stir in the cocoa powder, milk, and chocolate chips. Mix until the batter is a deep chocolate color.
Drop alternating spoonfuls of the plain pumpkin batter and the chocolate batter into your prepared loaf pan. Once all the batter is used, take a knife or a skewer and gently swirl it through the layers in a zig-zag pattern to create the marble effect.
Place the pan in the center of the oven and bake for 55 to 65 minutes. The bread is done when a toothpick inserted into the center comes out clean or with just a few moist crumbs. Let it cool in the pan for 10 minutes before transferring to a wire rack.