Start by carefully cutting one medium-sized pumpkin in half vertically, from top to bottom, using a sharp chef's knife. Remove the seeds and stringy pulp from both halves using a spoon, ice cream scoop, or your hands.
Arrange the pumpkin halves on a baking sheet. Roast them in a preheated oven at 350°F (175°C) for about 35 minutes, or until the pumpkin is tender.
Allow the roasted pumpkin pieces to cool until they are warm and safe to handle. Peel away the skin from the pumpkin slices.
Using a food processor, blend a few chunks at a time. Add a small amount of water for smoother blending and date syrup. If the puree is too dry, add a few tablespoons of water while pulsing to reach the desired texture.
Add all spices, date syrup and blend for 1 more minute.