Boil pasta according to package directions. (This will vary depending on the type of pasta that you use.)
Pour a can of pumpkin puree, a can of coconut milk, 1/2 cup of water, 1 tbsp of starch, 2 tsp sage, 1 1/2 tsp salt, and pepper into a saucepan and stir well.
Turn on the heat to medium and cook the sauce, stirring frequently, until it begins to boil.
Turn the heat down to low and let it simmer for 5 minutes stirring frequently.
Pour the sauce over your choice of pasta and serve warm. (Serve with vegan Italian sausage for a complete meal.)
Notes
You must stir the starch into the ingredients while they are still cold. Don't add the starch to hot liquid or it will immediately start to cook and get clumpy.
Make sure to stir the sauce frequently. You don't want the starch to settle to the bottom and get clumpy.
Be sure to turn down the heat and allow the sauce to boil slowly for about 5 minutes to blend the flavors without burning the sauce.