To start, cook your pasta in salted water according to the package instructions (al dente). When done, drain pasta and set aside.
In a large pot, bring the olive oil to medium heat. Add in the chopped onion, and sauté until soft, about 3-4 minutes.
Then, add in the chopped garlic and sauté for another minute.
Add in the spices, and stir until garlic and onions are evenly coated.
Then, add in the pumpkin purée, tomatoes, and water, and simmer for about 5 minutes. When done, let cool slightly.
Once the pumpkin sauce is slightly cooled, add it into the blender with the other blender ingredients, blending until everything is smooth and creamy. Taste, and adjust seasonings if desired.
Add the sauce back to the pot and toss with the pasta until all of the pasta is evenly coated.
Serve pasta with any toppings you like - ideas can include pumpkin seeds, red pepper flakes, or arugula.
Enjoy!