Cook pasta according to package instructions.
Heat some olive oil in a saucepan over medium heat.
Add garlic and cook until slightly brown.
Then transfer pumpkin cubes/ pumpkin puree, plant milk, veggie broth, nutritional yeast and garlic to a blender and blend until smooth.
In the meantime, dissolve corn starch in ¼ cup of water.
Put the sauce from the blender into saucepan (the one that you cooked your garlic in). Add corn starch, grated parmesan, 2 tablespoon of olive oil, pinch of salt & pepper.
The amount of salt needed will depend on how salted your veggie broth was (make sure to taste and adjust flavor).
Bring to a boil, then reduce heat and let simmer for about 3-5 minutes until sauce thickens.
Add cooked pasta to the sauce, mix well and serve with some additional parmesan sprinkled on top.