Add the butternut squash, garlic and onion to a food processor. Add 1 cup of non-dairy milk, 1 tbsp nutritional yeast, and puree, adding water or milk as necessary to get a smooth consistency. At this point, I taste the mixture to see if it needs more chipotle seasoning for spice or salt.
Step 3: Prepare the Baked Dish
In a pot, boil 1 package of pasta until al-dente. Reserve some of the cooking liquid to loosen the sauce later.
Mix the sauce with the pasta and place in a baking dish and 1 can of canellini beans, rinsed. The pasta should be slightly runny, but be able to hold shape enough. Add pasta water or milk if the sauce is too thick.
Cover with a layer of breadcrumbs and some pepitas, and return to the oven.
Set the oven to the broil setting and broil the pasta until the top browns slightly (1-3 minutes).
Remove, garnish with parsley and serve!