Bring a large pot of water to a boil and cook the pasta according to package instructions (al dente).
12 ounces pasta
Mince the garlic, chop the onion, and add both to a pan with the olive oil. Saute over low heat.
1 large yellow onion, 4 cloves garlic, 2 tablespoons olive oil
Once the garlic starts to brown, add the thyme. Let cook for about 5 minutes so the flavors blend together.
1 teaspoon fresh thyme leaves
Add this mixture and all remaining ingredients except the arrowroot powder to a blender or food processor. Process until smooth.
3 tablespoons coconut cream, 1 ½ cups filtered water , 1 cup pumpkin puree, ¼ cup nutritional yeast, 1 tablespoon pure maple syrup, ½ teaspoon fine salt, black pepper
Add the arrowroot powder and pulse a few times until well incorporated. The sauce will look thin at this stage, don't worry, it thickens as it cooks.
3 tablespoons arrowroot starch
Transfer the sauce to a large pan and heat over low heat. Let it simmer for about 5 minutes, or until nice and thick.
Taste and adjust seasonings as desired.
Combine with the cooked pasta and serve immediately with toppings if desired.
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