Cook the pasta according to the instructions on the packaging.
In the boiling water cook the diced pumpkin until it gets soft. Drain the pumpkin and transfer it to the blender.
Blend the cooked pumpkin with all sauce ingredients in the blender on high speed until combined.
In a medium bowl combine pasta and the pumpkin sauce from the blend. Mix a couple of times and serve in two bowls. Garnish with parmesan, fresh basil leaves, and olives.