In a microwave-safe bowl, cover butternut squash and carrots fully with water. Cook in the microwave until soft, about 8 minutes.
Carefully remove the bowl from the microwave and strain the water. Pour the butternut squash and carrots into a high-speed blender or food processor, add 1 cup of water to it, and set aside to allow it to cool a little bit before blending.
Meanwhile, in a large pot, melt butter and then add garlic. Sauté for about 30 seconds.
Add vegetable broth, almond milk, salt, pepper, and mustard and bring to a boil.
Once boiling, add pasta noodles and cook for amount of time the pasta package indicates. Do not strain the pasta once it’s cooked! You want to keep any extra liquid and flavor in the pot.
While waiting for the pasta to cook, puree the vegetables and water in the blender.
Once pasta is cooked, stir in cheese and pureed vegetables until well combined. Serve right away. It gets less creamy over time!