2Toss pumpkin cubes, olive oil, and 1 teaspoon salt together in a bowl; spread onto a baking sheet.
3Roast pumpkin in preheated oven for 30 minutes, increase heat to 425 degrees F (220 degrees C), and continue roasting until the pumpkin is tender, about 30 minutes more.
4Cool pumpkin cubes completely. Trim away outer edges so you have only soft, mashable pumpkin remaining. Measure 2 cups of mashed pumpkin; reserve remainder for another use.
5Preheat oven to 350 degrees F (175 degrees C). Prepare a 9x13-inch baking dish with cooking spray.
6Mash 2 cups pumpkin, sour cream, and creme de cacao together in a bowl with a potato masher until the mixture is relatively lump-free.
7Beat butter and sugar together in a large bowl with an electric mixer until light and fluffy; add eggs one at a time, thoroughly beating each egg into the butter mixture before adding the next. Beat vanilla extract and the pumpkin mixture into the butter mixture with the last egg.
8Mix flour, pumpkin pie spice, baking soda, baking powder, and 1/4 teaspoon salt together in a separate bowl; stir into the pumpkin mixture. Fold chocolate chips through the resulting batter and pour into the prepared baking dish.
9Bake in the preheated oven until a toothpick inserted into the center comes out clean, about 50 minutes.
Footnotes
Cook's Notes:
You can substitute pumpkin pack for the roast pumpkin. If you cannot find pumpkin pie spice in the store you can easily mix your own with cinnamon, nutmeg, cloves, and allspice.
This could also be made in two loaf pans instead of the baking dish.
Editor's Note:
The nutrition data for this recipe includes the full amount of the pumpkin.
Ingredients
10 servings
455 cals
Roast Pumpkin:
1 sugar pumpkin - seeded, peeled, and cut into cubes