Cook the pasta: Start by bringing a large pot of water to a boil while you chop the ingredients. Once the water boils, add salt generously and cook the pasta according to the package instructions. Make the sauce while the pasta cooks.1 lb pasta
Prepare the ingredients: Peel it carefully. Remove the seeds with a spoon and cut the squash into small cubes. Chop the onion, garlic cloves, and parsley.1 lb butternut squash + 1 medium onion + 2 garlic cloves
Sauté: Heat the olive oil in the pan. Add the onion, garlic, and butternut squash cubes, stir well, and cook until the onions are translucent and the pumpkin glossy, 3-4 minutes. Add turmeric and stir for 30 seconds. Add ½ of the parsley and stir to combine.2 tablespoons olive oil + vegetables + ¼ teaspoon turmeric + 1 ½ tablespoons of parsley
Simmer butternut sauce: Stir in the stock and cream. Cook on high heat, uncovered, until the butternut cubes are soft (12-15 minutes, but check).1 cup vegetable stock + ⅔ cup heavy cream
Blend the sauce with an immersion blender
Drain the pasta but reserve ½ cup of the pasta cooking water – you might need it to adjust the consistency of the sauce.
Add Parmesan: Stir in remaining parsley and Parmesan, and add salt and pepper to taste.1 ½ tablespoons parsley + 2 tablespoons Parmesan + fine sea salt and freshly ground black pepper
Adjust sauce consistency: If the sauce is too thick, add a few tablespoons of the reserved pasta cooking water.
Notes
Blending the sauce: I prefer the immersion blender, but you can use a regular blender or, food processor instead. Be careful when blending hot sauce - work in batches and hold the lid securely. A potato masher works too, but the sauce will be a bit rustic.
Replace butternut squash with a flavorful pumpkin like Hokkaido or sugar pie pumpkin. Hokkaido doesn’t need peeling, but peel any other sort.
Vegetable stock: Made from a cube is perfectly fine. Chicken stock works perfectly, too.
Vegetarian option: Use vegetarian hard cheese if you would like this dish to be strictly vegetarian - Parmesan is not vegetarian as it is made with animal rennet.
Vegan option: Replace the cream with coconut milk or other plant-based cream (soy, oat, or almond milk). Replace the cheese with nutritional yeast to taste – about 3 tablespoons.